210202111220 has 24 divisors (see below), whose sum is σ = 441775101600. Its totient is φ = 84014050592.

The previous prime is 210202111219. The next prime is 210202111243. The reversal of 210202111220 is 22111202012.

It is a super-2 number, since 2×210202111220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210202111195 and 210202111204.

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, 4148810 + ... + 4199169.

It is an arithmetic number, because the mean of its divisors is an integer number (18407295900).

Almost surely, 2^210202111220 is an apocalyptic number.

210202111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210202111220 is an abundant number, since it is smaller than the sum of its proper divisors (231572990380).

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

210202111220 is a wasteful number, since it uses less digits than its factorization.

210202111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8349247 (or 8349245 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210202111220 its reverse (22111202012), we get a palindrome (232313313232).

The spelling of 210202111220 in words is "two hundred ten billion, two hundred two million, one hundred eleven thousand, two hundred twenty".