1252421220511 has 8 divisors (see below), whose sum is σ = 1258161408000. Its totient is φ = 1246682140152.

The previous prime is 1252421220499. The next prime is 1252421220521. The reversal of 1252421220511 is 1150221242521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1252421220511 - 2⁷ = 1252421220383 is a prime.

It is a super-2 number, since 2×1252421220511² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1252421220511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252421220521) 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, 2034990 + ... + 2577988.

It is an arithmetic number, because the mean of its divisors is an integer number (157270176000).

Almost surely, 2^{1252421220511} is an apocalyptic number.

1252421220511 is a deficient number, since it is larger than the sum of its proper divisors (5740187489).

1252421220511 is a wasteful number, since it uses less digits than its factorization.

1252421220511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553565.

The product of its (nonzero) digits is 3200, while the sum is 28.

The spelling of 1252421220511 in words is "one trillion, two hundred fifty-two billion, four hundred twenty-one million, two hundred twenty thousand, five hundred eleven".