2101110010651 has 4 divisors (see below), whose sum is σ = 2121509137072. Its totient is φ = 2080710884232.

The previous prime is 2101110010631. The next prime is 2101110010663. The reversal of 2101110010651 is 1560100111012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2101110010651 - 2¹⁷ = 2101109879579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101110010621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10199563056 + ... + 10199563261.

It is an arithmetic number, because the mean of its divisors is an integer number (530377284268).

Almost surely, 2^{2101110010651} is an apocalyptic number.

2101110010651 is a deficient number, since it is larger than the sum of its proper divisors (20399126421).

2101110010651 is a wasteful number, since it uses less digits than its factorization.

2101110010651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20399126420.

The product of its (nonzero) digits is 60, while the sum is 19.

Adding to 2101110010651 its reverse (1560100111012), we get a palindrome (3661210121663).

The spelling of 2101110010651 in words is "two trillion, one hundred one billion, one hundred ten million, ten thousand, six hundred fifty-one".