121202201021121 has 48 divisors (see below), whose sum is σ = 198833997298560. Its totient is φ = 70491536098560.

The previous prime is 121202201021119. The next prime is 121202201021123. The reversal of 121202201021121 is 121120102202121.

121202201021121 is a `hidden beast` number, since 1 + 212 + 0 + 220 + 1 + 0 + 211 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (121202201021119) and next prime (121202201021123).

It is not a de Polignac number, because 121202201021121 - 2¹ = 121202201021119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121202201021094 and 121202201021103.

It is not an unprimeable number, because it can be changed into a prime (121202201021123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 226364341 + ... + 226899138.

It is an arithmetic number, because the mean of its divisors is an integer number (4142374943720).

Almost surely, 2^{121202201021121} is an apocalyptic number.

121202201021121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121202201021121 is a deficient number, since it is larger than the sum of its proper divisors (77631796277439).

121202201021121 is a wasteful number, since it uses less digits than its factorization.

121202201021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453263606 (or 453263603 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121202201021121 its reverse (121120102202121), we get a palindrome (242322303223242).

The spelling of 121202201021121 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred one million, twenty-one thousand, one hundred twenty-one".