10001121020120 has 32 divisors (see below), whose sum is σ = 22579322739120. Its totient is φ = 3986794995840.

The previous prime is 10001121020101. The next prime is 10001121020179. The reversal of 10001121020120 is 2102012110001.

It is a super-2 number, since 2×10001121020120² (a number of 27 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, 426657266 + ... + 426680705.

Almost surely, 2^{10001121020120} is an apocalyptic number.

10001121020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10001121020120 is an abundant number, since it is smaller than the sum of its proper divisors (12578201719000).

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

10001121020120 is a wasteful number, since it uses less digits than its factorization.

10001121020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853338275 (or 853338271 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10001121020120 its reverse (2102012110001), we get a palindrome (12103133130121).

It can be divided in two parts, 10001 and 121020120, that added together give a palindrome (121030121).

The spelling of 10001121020120 in words is "ten trillion, one billion, one hundred twenty-one million, twenty thousand, one hundred twenty".