210211102120220 has 48 divisors (see below), whose sum is σ = 443628285700320. Its totient is φ = 83669134814976.

The previous prime is 210211102120213. The next prime is 210211102120223. The reversal of 210211102120220 is 22021201112012.

It is a super-2 number, since 2×210211102120220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210211102120223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23640650 + ... + 31293809.

It is an arithmetic number, because the mean of its divisors is an integer number (9242255952090).

Almost surely, 2^{210211102120220} is an apocalyptic number.

210211102120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210211102120220 is an abundant number, since it is smaller than the sum of its proper divisors (233417183580100).

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

210211102120220 is a wasteful number, since it uses less digits than its factorization.

210211102120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54935414 (or 54935412 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210211102120220 its reverse (22021201112012), we get a palindrome (232232303232232).

The spelling of 210211102120220 in words is "two hundred ten trillion, two hundred eleven billion, one hundred two million, one hundred twenty thousand, two hundred twenty".