211211000002220 has 48 divisors (see below), whose sum is σ = 447850170754560. Its totient is φ = 83664576325824.

The previous prime is 211211000002213. The next prime is 211211000002231. The reversal of 211211000002220 is 22200000112112.

It is a super-2 number, since 2×211211000002220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211211000002195 and 211211000002204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11913230 + ... + 23755989.

It is an arithmetic number, because the mean of its divisors is an integer number (9330211890720).

Almost surely, 2^{211211000002220} is an apocalyptic number.

211211000002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211211000002220 is an abundant number, since it is smaller than the sum of its proper divisors (236639170752340).

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

211211000002220 is a wasteful number, since it uses less digits than its factorization.

211211000002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35672102 (or 35672100 counting only the distinct ones).

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

Adding to 211211000002220 its reverse (22200000112112), we get a palindrome (233411000114332).

The spelling of 211211000002220 in words is "two hundred eleven trillion, two hundred eleven billion, two thousand, two hundred twenty".