121202839072 has 288 divisors, whose sum is σ = 290436632640. Its totient is φ = 49614888960.

The previous prime is 121202839049. The next prime is 121202839091. The reversal of 121202839072 is 270938202121.

It is a super-2 number, since 2×121202839072² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 884692188 + ... + 884692324.

It is an arithmetic number, because the mean of its divisors is an integer number (1008460530).

Almost surely, 2^121202839072 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 121202839072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145218316320).

121202839072 is an abundant number, since it is smaller than the sum of its proper divisors (169233793568).

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

121202839072 is a wasteful number, since it uses less digits than its factorization.

121202839072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 121202839072 in words is "one hundred twenty-one billion, two hundred two million, eight hundred thirty-nine thousand, seventy-two".