1231232021222 has 32 divisors (see below), whose sum is σ = 2118956682240. Its totient is φ = 525605891040.

The previous prime is 1231232021179. The next prime is 1231232021233. The reversal of 1231232021222 is 2221202321321.

It is a happy number.

It is a super-2 number, since 2×1231232021222² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4319972 + ... + 4596152.

It is an arithmetic number, because the mean of its divisors is an integer number (66217396320).

Almost surely, 2^{1231232021222} is an apocalyptic number.

1231232021222 is a deficient number, since it is larger than the sum of its proper divisors (887724661018).

1231232021222 is a wasteful number, since it uses less digits than its factorization.

1231232021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277436.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1231232021222 its reverse (2221202321321), we get a palindrome (3452434342543).

The spelling of 1231232021222 in words is "one trillion, two hundred thirty-one billion, two hundred thirty-two million, twenty-one thousand, two hundred twenty-two".