1221023133031 has 16 divisors (see below), whose sum is σ = 1361255123200. Its totient is φ = 1087614812160.

The previous prime is 1221023132957. The next prime is 1221023133041. The reversal of 1221023133031 is 1303313201221.

It is a cyclic number.

It is not a de Polignac number, because 1221023133031 - 2⁹ = 1221023132519 is a prime.

It is a super-2 number, since 2×1221023133031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1221023132993 and 1221023133011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221023133041) 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, 4200090 + ... + 4481383.

It is an arithmetic number, because the mean of its divisors is an integer number (85078445200).

Almost surely, 2^{1221023133031} is an apocalyptic number.

1221023133031 is a deficient number, since it is larger than the sum of its proper divisors (140231990169).

1221023133031 is a wasteful number, since it uses less digits than its factorization.

1221023133031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8681866.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1221023133031 its reverse (1303313201221), we get a palindrome (2524336334252).

The spelling of 1221023133031 in words is "one trillion, two hundred twenty-one billion, twenty-three million, one hundred thirty-three thousand, thirty-one".