1211222200131 has 12 divisors (see below), whose sum is σ = 1841624398120. Its totient is φ = 764982442080.

The previous prime is 1211222200117. The next prime is 1211222200141. The reversal of 1211222200131 is 1310022221121.

1211222200131 is a `hidden beast` number, since 1 + 211 + 222 + 200 + 1 + 31 = 666.

It is not a de Polignac number, because 1211222200131 - 2¹³ = 1211222191939 is a prime.

It is a super-2 number, since 2×1211222200131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211222200141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3541585210 + ... + 3541585551.

Almost surely, 2^{1211222200131} is an apocalyptic number.

1211222200131 is a deficient number, since it is larger than the sum of its proper divisors (630402197989).

1211222200131 is a wasteful number, since it uses less digits than its factorization.

1211222200131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7083170786 (or 7083170783 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1211222200131 its reverse (1310022221121), we get a palindrome (2521244421252).

The spelling of 1211222200131 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, two hundred thousand, one hundred thirty-one".