1220211033231 has 16 divisors (see below), whose sum is σ = 1636333332480. Its totient is φ = 808785895680.

The previous prime is 1220211033203. The next prime is 1220211033241. The reversal of 1220211033231 is 1323301120221.

It is not a de Polignac number, because 1220211033231 - 2¹⁷ = 1220210902159 is a prime.

It is a super-2 number, since 2×1220211033231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220211033198 and 1220211033207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220211033241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518736 + ... + 1646058.

It is an arithmetic number, because the mean of its divisors is an integer number (102270833280).

Almost surely, 2^{1220211033231} is an apocalyptic number.

1220211033231 is a deficient number, since it is larger than the sum of its proper divisors (416122299249).

1220211033231 is a wasteful number, since it uses less digits than its factorization.

1220211033231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129406.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1220211033231 its reverse (1323301120221), we get a palindrome (2543512153452).

The spelling of 1220211033231 in words is "one trillion, two hundred twenty billion, two hundred eleven million, thirty-three thousand, two hundred thirty-one".