1231211232022 has 4 divisors (see below), whose sum is σ = 1846816848036. Its totient is φ = 615605616010.

The previous prime is 1231211232001. The next prime is 1231211232061. The reversal of 1231211232022 is 2202321121321.

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

It is a super-2 number, since 2×1231211232022² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231211231984 and 1231211232002.

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, 307802808004 + ... + 307802808007.

It is an arithmetic number, because the mean of its divisors is an integer number (461704212009).

Almost surely, 2^{1231211232022} is an apocalyptic number.

1231211232022 is a deficient number, since it is larger than the sum of its proper divisors (615605616014).

1231211232022 is an equidigital number, since it uses as much as digits as its factorization.

1231211232022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615605616013.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1231211232022 its reverse (2202321121321), we get a palindrome (3433532353343).

The spelling of 1231211232022 in words is "one trillion, two hundred thirty-one billion, two hundred eleven million, two hundred thirty-two thousand, twenty-two".