211220201210202 has 24 divisors (see below), whose sum is σ = 457648411308660. Its totient is φ = 70406019579840.

The previous prime is 211220201210191. The next prime is 211220201210261. The reversal of 211220201210202 is 202012102022112.

It is a happy number.

211220201210202 is a `hidden beast` number, since 2 + 11 + 220 + 20 + 1 + 210 + 202 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 211108665917241 + 111535292961 = 14529579^2 + 333969^2 .

It is a super-2 number, since 2×211220201210202² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57687699 + ... + 61239782.

Almost surely, 2^{211220201210202} is an apocalyptic number.

211220201210202 is an abundant number, since it is smaller than the sum of its proper divisors (246428210098458).

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

211220201210202 is a wasteful number, since it uses less digits than its factorization.

211220201210202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119026158 (or 119026155 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211220201210202 its reverse (202012102022112), we get a palindrome (413232303232314).

It can be divided in two parts, 2112 and 20201210202, that multiplied together give a palindrome (42664955946624).

The spelling of 211220201210202 in words is "two hundred eleven trillion, two hundred twenty billion, two hundred one million, two hundred ten thousand, two hundred two".