211001120220120 has 32 divisors (see below), whose sum is σ = 633003360660720. Its totient is φ = 56266965392000.

The previous prime is 211001120220103. The next prime is 211001120220139. The reversal of 211001120220120 is 21022021100112.

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 211001120220120.

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, 879171334131 + ... + 879171334370.

Almost surely, 2^{211001120220120} is an apocalyptic number.

211001120220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211001120220120 is an abundant number, since it is smaller than the sum of its proper divisors (422002240440600).

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

211001120220120 is a wasteful number, since it uses less digits than its factorization.

211001120220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758342668515 (or 1758342668511 counting only the distinct ones).

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

Adding to 211001120220120 its reverse (21022021100112), we get a palindrome (232023141320232).

The spelling of 211001120220120 in words is "two hundred eleven trillion, one billion, one hundred twenty million, two hundred twenty thousand, one hundred twenty".