1211312022 has 16 divisors (see below), whose sum is σ = 2423071152. Its totient is φ = 403696160.

The previous prime is 1211312017. The next prime is 1211312023. The reversal of 1211312022 is 2202131121.

It is a junction number, because it is equal to n+sod(n) for n = 1211311992 and 1211312010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211312023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24148 + ... + 54824.

It is an arithmetic number, because the mean of its divisors is an integer number (151441947).

Almost surely, 2^1211312022 is an apocalyptic number.

1211312022 is an abundant number, since it is smaller than the sum of its proper divisors (1211759130).

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

1211312022 is a wasteful number, since it uses less digits than its factorization.

1211312022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37263.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1211312022 is about 34803.9081426210. The cubic root of 1211312022 is about 1065.9872473884.

Adding to 1211312022 its reverse (2202131121), we get a palindrome (3413443143).

The spelling of 1211312022 in words is "one billion, two hundred eleven million, three hundred twelve thousand, twenty-two".