121011120221 has 8 divisors (see below), whose sum is σ = 125408680920. Its totient is φ = 116628543808.

The previous prime is 121011120193. The next prime is 121011120233. The reversal of 121011120221 is 122021110121.

It can be written as a sum of positive squares in 4 ways, for example, as 21981324121 + 99029796100 = 148261^2 + 314690^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121011120221 - 2⁶ = 121011120157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121011120196 and 121011120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011120421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3729626 + ... + 3761931.

It is an arithmetic number, because the mean of its divisors is an integer number (15676085115).

Almost surely, 2^121011120221 is an apocalyptic number.

It is an amenable number.

121011120221 is a deficient number, since it is larger than the sum of its proper divisors (4397560699).

121011120221 is an equidigital number, since it uses as much as digits as its factorization.

121011120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7492143.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121011120221 its reverse (122021110121), we get a palindrome (243032230342).

The spelling of 121011120221 in words is "one hundred twenty-one billion, eleven million, one hundred twenty thousand, two hundred twenty-one".