20211002112120 has 32 divisors (see below), whose sum is σ = 60633006336720. Its totient is φ = 5389600563200.

The previous prime is 20211002112083. The next prime is 20211002112121. The reversal of 20211002112120 is 2121120011202.

It is a super-2 number, since 2×20211002112120² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20211002112120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211002112121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84212508681 + ... + 84212508920.

Almost surely, 2^{20211002112120} is an apocalyptic number.

20211002112120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211002112120 is an abundant number, since it is smaller than the sum of its proper divisors (40422004224600).

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

20211002112120 is a wasteful number, since it uses less digits than its factorization.

20211002112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168425017615 (or 168425017611 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20211002112120 its reverse (2121120011202), we get a palindrome (22332122123322).

The spelling of 20211002112120 in words is "twenty trillion, two hundred eleven billion, two million, one hundred twelve thousand, one hundred twenty".