1231101111022 has 4 divisors (see below), whose sum is σ = 1846651666536. Its totient is φ = 615550555510.

The previous prime is 1231101110977. The next prime is 1231101111109. The reversal of 1231101111022 is 2201111011321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1231101110987 and 1231101111005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307775277754 + ... + 307775277757.

It is an arithmetic number, because the mean of its divisors is an integer number (461662916634).

Almost surely, 2^{1231101111022} is an apocalyptic number.

1231101111022 is a deficient number, since it is larger than the sum of its proper divisors (615550555514).

1231101111022 is an equidigital number, since it uses as much as digits as its factorization.

1231101111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615550555513.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1231101111022 its reverse (2201111011321), we get a palindrome (3432212122343).

The spelling of 1231101111022 in words is "one trillion, two hundred thirty-one billion, one hundred one million, one hundred eleven thousand, twenty-two".