121020123312032 has 96 divisors (see below), whose sum is σ = 276058612593792. Its totient is φ = 51149112643584.

The previous prime is 121020123312013. The next prime is 121020123312073. The reversal of 121020123312032 is 230213321020121.

It is a super-2 number, since 2×121020123312032² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121020123311989 and 121020123312007.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136538963 + ... + 137422445.

It is an arithmetic number, because the mean of its divisors is an integer number (2875610547852).

Almost surely, 2^{121020123312032} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121020123312032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138029306296896).

121020123312032 is an abundant number, since it is smaller than the sum of its proper divisors (155038489281760).

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

121020123312032 is an equidigital number, since it uses as much as digits as its factorization.

121020123312032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891950 (or 891942 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 121020123312032 its reverse (230213321020121), we get a palindrome (351233444332153).

The spelling of 121020123312032 in words is "one hundred twenty-one trillion, twenty billion, one hundred twenty-three million, three hundred twelve thousand, thirty-two".