211220212210202 has 64 divisors (see below), whose sum is σ = 368391549736224. Its totient is φ = 89946619576320.

The previous prime is 211220212210193. The next prime is 211220212210207. The reversal of 211220212210202 is 202012212022112.

It can be written as a sum of positive squares in 16 ways, for example, as 5385783091441 + 205834429118761 = 2320729^2 + 14346931^2 .

It is a super-2 number, since 2×211220212210202² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211220212210207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24805052 + ... + 32213832.

Almost surely, 2^{211220212210202} is an apocalyptic number.

211220212210202 is a deficient number, since it is larger than the sum of its proper divisors (157171337526022).

211220212210202 is a wasteful number, since it uses less digits than its factorization.

211220212210202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7410083.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 211220212210202 its reverse (202012212022112), we get a palindrome (413232424232314).

The spelling of 211220212210202 in words is "two hundred eleven trillion, two hundred twenty billion, two hundred twelve million, two hundred ten thousand, two hundred two".