2031111121122 has 12 divisors (see below), whose sum is σ = 4400740762470. Its totient is φ = 677037040368.

The previous prime is 2031111121121. The next prime is 2031111121129. The reversal of 2031111121122 is 2211211111302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1133413615161 + 897697505961 = 1064619^2 + 947469^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 112839506729 = 2031111121122 / (2 + 0 + 3 + 1 + 1 + 1 + 1 + 1 + 2 + 1 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 2031111121095 and 2031111121104.

It is not an unprimeable number, because it can be changed into a prime (2031111121121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56419753347 + ... + 56419753382.

Almost surely, 2^{2031111121122} is an apocalyptic number.

2031111121122 is an abundant number, since it is smaller than the sum of its proper divisors (2369629641348).

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

2031111121122 is a wasteful number, since it uses less digits than its factorization.

2031111121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112839506737 (or 112839506734 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 2031111121122 its reverse (2211211111302), we get a palindrome (4242322232424).

The spelling of 2031111121122 in words is "two trillion, thirty-one billion, one hundred eleven million, one hundred twenty-one thousand, one hundred twenty-two".