1111051100551 has 16 divisors (see below), whose sum is σ = 1304591503680. Its totient is φ = 926235164160.

The previous prime is 1111051100539. The next prime is 1111051100563. The reversal of 1111051100551 is 1550011501111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1111051100539) and next prime (1111051100563).

It is a cyclic number.

It is not a de Polignac number, because 1111051100551 - 2⁵ = 1111051100519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111051100521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146380 + ... + 1497841.

It is an arithmetic number, because the mean of its divisors is an integer number (81536968980).

Almost surely, 2^{1111051100551} is an apocalyptic number.

1111051100551 is a deficient number, since it is larger than the sum of its proper divisors (193540403129).

1111051100551 is a wasteful number, since it uses less digits than its factorization.

1111051100551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646874.

The product of its (nonzero) digits is 125, while the sum is 22.

Adding to 1111051100551 its reverse (1550011501111), we get a palindrome (2661062601662).

The spelling of 1111051100551 in words is "one trillion, one hundred eleven billion, fifty-one million, one hundred thousand, five hundred fifty-one".