10021111020120 has 64 divisors (see below), whose sum is σ = 30075344881920. Its totient is φ = 2671228554624.

The previous prime is 10021111020083. The next prime is 10021111020131. The reversal of 10021111020120 is 2102011112001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10021111020096 and 10021111020105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16381474 + ... + 16982193.

It is an arithmetic number, because the mean of its divisors is an integer number (469927263780).

Almost surely, 2^{10021111020120} is an apocalyptic number.

10021111020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021111020120 is an abundant number, since it is smaller than the sum of its proper divisors (20054233861800).

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

10021111020120 is a wasteful number, since it uses less digits than its factorization.

10021111020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33366184 (or 33366180 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10021111020120 its reverse (2102011112001), we get a palindrome (12123122132121).

The spelling of 10021111020120 in words is "ten trillion, twenty-one billion, one hundred eleven million, twenty thousand, one hundred twenty".