20021121010112 has 28 divisors (see below), whose sum is σ = 39746397941640. Its totient is φ = 10006280583936.

The previous prime is 20021121010097. The next prime is 20021121010171. The reversal of 20021121010112 is 21101012112002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66722903 + ... + 67022294.

Almost surely, 2^{20021121010112} is an apocalyptic number.

It is an amenable number.

20021121010112 is a deficient number, since it is larger than the sum of its proper divisors (19725276931528).

20021121010112 is a wasteful number, since it uses less digits than its factorization.

20021121010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133747548 (or 133747538 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20021121010112 its reverse (21101012112002), we get a palindrome (41122133122114).

The spelling of 20021121010112 in words is "twenty trillion, twenty-one billion, one hundred twenty-one million, ten thousand, one hundred twelve".