1211306031122 has 32 divisors (see below), whose sum is σ = 2068401567744. Its totient is φ = 526633267600.

The previous prime is 1211306031101. The next prime is 1211306031127. The reversal of 1211306031122 is 2211306031121.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (1211306031127) 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, 24529997 + ... + 24579327.

It is an arithmetic number, because the mean of its divisors is an integer number (64637548992).

Almost surely, 2^{1211306031122} is an apocalyptic number.

1211306031122 is a deficient number, since it is larger than the sum of its proper divisors (857095536622).

1211306031122 is a wasteful number, since it uses less digits than its factorization.

1211306031122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97894.

The product of its (nonzero) digits is 432, while the sum is 23.

Subtracting 1211306031122 from its reverse (2211306031121), we obtain a palindrome (999999999999).

The spelling of 1211306031122 in words is "one trillion, two hundred eleven billion, three hundred six million, thirty-one thousand, one hundred twenty-two".