121021000315552 has 12 divisors (see below), whose sum is σ = 238260094371306. Its totient is φ = 60510500157760.

The previous prime is 121021000315547. The next prime is 121021000315577. The reversal of 121021000315552 is 255513000120121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 72333596167056 + 48687404148496 = 8504916^2 + 6977636^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121021000315552.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890953129899 + ... + 1890953129962.

Almost surely, 2^{121021000315552} is an apocalyptic number.

It is an amenable number.

121021000315552 is a deficient number, since it is larger than the sum of its proper divisors (117239094055754).

121021000315552 is an equidigital number, since it uses as much as digits as its factorization.

121021000315552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3781906259871 (or 3781906259863 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 121021000315552 its reverse (255513000120121), we get a palindrome (376534000435673).

The spelling of 121021000315552 in words is "one hundred twenty-one trillion, twenty-one billion, three hundred fifteen thousand, five hundred fifty-two".