2101210020111 has 16 divisors (see below), whose sum is σ = 2879315860608. Its totient is φ = 1362007620000.

The previous prime is 2101210020109. The next prime is 2101210020113. The reversal of 2101210020111 is 1110200121012.

It is an interprime number because it is at equal distance from previous prime (2101210020109) and next prime (2101210020113).

It is not a de Polignac number, because 2101210020111 - 2¹ = 2101210020109 is a prime.

It is a super-2 number, since 2×2101210020111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101210020113) 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, 6361965 + ... + 6684086.

It is an arithmetic number, because the mean of its divisors is an integer number (179957241288).

Almost surely, 2^{2101210020111} is an apocalyptic number.

2101210020111 is a deficient number, since it is larger than the sum of its proper divisors (778105840497).

2101210020111 is a wasteful number, since it uses less digits than its factorization.

2101210020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13047542.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2101210020111 its reverse (1110200121012), we get a palindrome (3211410141123).

The spelling of 2101210020111 in words is "two trillion, one hundred one billion, two hundred ten million, twenty thousand, one hundred eleven".