121000101020 has 12 divisors (see below), whose sum is σ = 254100212184. Its totient is φ = 48400040400.

The previous prime is 121000100989. The next prime is 121000101023. The reversal of 121000101020 is 20101000121.

It is a junction number, because it is equal to n+sod(n) for n = 121000100989 and 121000101007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000101023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3025002506 + ... + 3025002545.

It is an arithmetic number, because the mean of its divisors is an integer number (21175017682).

Almost surely, 2^121000101020 is an apocalyptic number.

121000101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121000101020 is an abundant number, since it is smaller than the sum of its proper divisors (133100111164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121000101020 is a wasteful number, since it uses less digits than its factorization.

121000101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050005060 (or 6050005058 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 121000101020 its reverse (20101000121), we get a palindrome (141101101141).

The spelling of 121000101020 in words is "one hundred twenty-one billion, one hundred one thousand, twenty".