1222143454251 has 12 divisors (see below), whose sum is σ = 1765424558040. Its totient is φ = 814713271200.

The previous prime is 1222143454223. The next prime is 1222143454291. The reversal of 1222143454251 is 1524543412221.

1222143454251 is a `hidden beast` number, since 1 + 2 + 2 + 21 + 43 + 4 + 542 + 51 = 666.

It is not a de Polignac number, because 1222143454251 - 2²⁹ = 1221606583339 is a prime.

It is a super-2 number, since 2×1222143454251² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222143454201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3927786 + ... + 4227503.

It is an arithmetic number, because the mean of its divisors is an integer number (147118713170).

Almost surely, 2^{1222143454251} is an apocalyptic number.

1222143454251 is a deficient number, since it is larger than the sum of its proper divisors (543281103789).

1222143454251 is a wasteful number, since it uses less digits than its factorization.

1222143454251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8171946 (or 8171943 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

Adding to 1222143454251 its reverse (1524543412221), we get a palindrome (2746686866472).

The spelling of 1222143454251 in words is "one trillion, two hundred twenty-two billion, one hundred forty-three million, four hundred fifty-four thousand, two hundred fifty-one".