1213144022 has 4 divisors (see below), whose sum is σ = 1819716036. Its totient is φ = 606572010.

The previous prime is 1213144007. The next prime is 1213144063. The reversal of 1213144022 is 2204413121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2204413121 = 37 ⋅59578733.

It is a super-2 number, since 2×1213144022² = 2943436836228672968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1213143985 and 1213144003.

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, 303286004 + ... + 303286007.

It is an arithmetic number, because the mean of its divisors is an integer number (454929009).

Almost surely, 2^1213144022 is an apocalyptic number.

1213144022 is a deficient number, since it is larger than the sum of its proper divisors (606572014).

1213144022 is an equidigital number, since it uses as much as digits as its factorization.

1213144022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606572013.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1213144022 is about 34830.2170822980. The cubic root of 1213144022 is about 1066.5243798271.

Adding to 1213144022 its reverse (2204413121), we get a palindrome (3417557143).

The spelling of 1213144022 in words is "one billion, two hundred thirteen million, one hundred forty-four thousand, twenty-two".