1211230311022 has 16 divisors (see below), whose sum is σ = 1912491594000. Its totient is φ = 573733869120.

The previous prime is 1211230311013. The next prime is 1211230311047. The reversal of 1211230311022 is 2201130321121.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4698522 + ... + 4949602.

It is an arithmetic number, because the mean of its divisors is an integer number (119530724625).

Almost surely, 2^{1211230311022} is an apocalyptic number.

1211230311022 is a deficient number, since it is larger than the sum of its proper divisors (701261282978).

1211230311022 is a wasteful number, since it uses less digits than its factorization.

1211230311022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378051.

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

Adding to 1211230311022 its reverse (2201130321121), we get a palindrome (3412360632143).

The spelling of 1211230311022 in words is "one trillion, two hundred eleven billion, two hundred thirty million, three hundred eleven thousand, twenty-two".