121021202000 has 40 divisors (see below), whose sum is σ = 292629271272. Its totient is φ = 48408480000.

The previous prime is 121021201981. The next prime is 121021202051. The reversal of 121021202000 is 202120121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16878167056 + 104143034944 = 129916^2 + 322712^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×121021202000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 30253301 + ... + 30257300.

Almost surely, 2^121021202000 is an apocalyptic number.

121021202000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121021202000 is an abundant number, since it is smaller than the sum of its proper divisors (171608069272).

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

121021202000 is an equidigital number, since it uses as much as digits as its factorization.

121021202000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60510624 (or 60510608 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121021202000 its reverse (202120121), we get a palindrome (121223322121).

The spelling of 121021202000 in words is "one hundred twenty-one billion, twenty-one million, two hundred two thousand".