1021220011204 has 24 divisors (see below), whose sum is σ = 1789446193920. Its totient is φ = 509949960384.

The previous prime is 1021220011193. The next prime is 1021220011223. The reversal of 1021220011204 is 4021100221201.

It is a super-2 number, since 2×1021220011204² (a number of 25 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, 15037477 + ... + 15105235.

It is an arithmetic number, because the mean of its divisors is an integer number (74560258080).

Almost surely, 2^{1021220011204} is an apocalyptic number.

It is an amenable number.

1021220011204 is a deficient number, since it is larger than the sum of its proper divisors (768226182716).

1021220011204 is a wasteful number, since it uses less digits than its factorization.

1021220011204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72579 (or 72577 counting only the distinct ones).

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

Adding to 1021220011204 its reverse (4021100221201), we get a palindrome (5042320232405).

The spelling of 1021220011204 in words is "one trillion, twenty-one billion, two hundred twenty million, eleven thousand, two hundred four".