1031121023212 has 36 divisors (see below), whose sum is σ = 2222542380744. Its totient is φ = 415914360960.

The previous prime is 1031121023201. The next prime is 1031121023249. The reversal of 1031121023212 is 2123201211301.

It is a self number, because there is not a number n which added to its sum of digits gives 1031121023212.

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, 154726714 + ... + 154733377.

It is an arithmetic number, because the mean of its divisors is an integer number (61737288354).

Almost surely, 2^{1031121023212} is an apocalyptic number.

It is an amenable number.

1031121023212 is an abundant number, since it is smaller than the sum of its proper divisors (1191421357532).

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

1031121023212 is a wasteful number, since it uses less digits than its factorization.

1031121023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309460126 (or 309460117 counting only the distinct ones).

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

Adding to 1031121023212 its reverse (2123201211301), we get a palindrome (3154322234513).

The spelling of 1031121023212 in words is "one trillion, thirty-one billion, one hundred twenty-one million, twenty-three thousand, two hundred twelve".