1031012213221 has 32 divisors (see below), whose sum is σ = 1090117656576. Its totient is φ = 973805976000.

The previous prime is 1031012213201. The next prime is 1031012213269. The reversal of 1031012213221 is 1223122101301.

1031012213221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1031012213221 - 2⁷ = 1031012213093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031012213201) 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, 133495066 + ... + 133502788.

It is an arithmetic number, because the mean of its divisors is an integer number (34066176768).

Almost surely, 2^{1031012213221} is an apocalyptic number.

It is an amenable number.

1031012213221 is a deficient number, since it is larger than the sum of its proper divisors (59105443355).

1031012213221 is a wasteful number, since it uses less digits than its factorization.

1031012213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8353.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1031012213221 its reverse (1223122101301), we get a palindrome (2254134314522).

The spelling of 1031012213221 in words is "one trillion, thirty-one billion, twelve million, two hundred thirteen thousand, two hundred twenty-one".