20211200200120 has 96 divisors (see below), whose sum is σ = 46324426402800. Its totient is φ = 7935269230592.

The previous prime is 20211200200091. The next prime is 20211200200153. The reversal of 20211200200120 is 2100200211202.

It is a happy number.

It is a super-2 number, since 2×20211200200120² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20211200200120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66666399 + ... + 66968881.

Almost surely, 2^{20211200200120} is an apocalyptic number.

20211200200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20211200200120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23162213201400).

20211200200120 is an abundant number, since it is smaller than the sum of its proper divisors (26113226202680).

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

20211200200120 is a wasteful number, since it uses less digits than its factorization.

20211200200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302857 (or 302716 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20211200200120 its reverse (2100200211202), we get a palindrome (22311400411322).

The spelling of 20211200200120 in words is "twenty trillion, two hundred eleven billion, two hundred million, two hundred thousand, one hundred twenty".