1151200021511 has 2 divisors, whose sum is σ = 1151200021512. Its totient is φ = 1151200021510.

The previous prime is 1151200021507. The next prime is 1151200021529.

1151200021511 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 1151200021511 - 2² = 1151200021507 is a prime.

It is a super-2 number, since 2×1151200021511² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1151200020511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575600010755 + 575600010756.

It is an arithmetic number, because the mean of its divisors is an integer number (575600010756).

Almost surely, 2^{1151200021511} is an apocalyptic number.

1151200021511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151200021511 is an equidigital number, since it uses as much as digits as its factorization.

1151200021511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 20.

It can be divided in two parts, 11512000 and 21511, that added together give a palindrome (11533511).

The spelling of 1151200021511 in words is "one trillion, one hundred fifty-one billion, two hundred million, twenty-one thousand, five hundred eleven".