121021220120002 has 16 divisors (see below), whose sum is σ = 184707204274080. Its totient is φ = 59453247177792.

The previous prime is 121021220119997. The next prime is 121021220120029. The reversal of 121021220120002 is 200021022120121.

It is a happy number.

It is a super-2 number, since 2×121021220120002² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273565308 + ... + 274007335.

It is an arithmetic number, because the mean of its divisors is an integer number (11544200267130).

Almost surely, 2^{121021220120002} is an apocalyptic number.

121021220120002 is a deficient number, since it is larger than the sum of its proper divisors (63685984154078).

121021220120002 is a wasteful number, since it uses less digits than its factorization.

121021220120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547574577.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121021220120002 its reverse (200021022120121), we get a palindrome (321042242240123).

The spelling of 121021220120002 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred twenty million, one hundred twenty thousand, two".