101112121110021 has 16 divisors (see below), whose sum is σ = 154088636540928. Its totient is φ = 57773471137200.

The previous prime is 101112121109981. The next prime is 101112121110029. The reversal of 101112121110021 is 120011121211101.

It is not a de Polignac number, because 101112121110021 - 2¹³ = 101112121101829 is a prime.

It is a super-2 number, since 2×101112121110021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101112121110029) 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, 203236585 + ... + 203733486.

It is an arithmetic number, because the mean of its divisors is an integer number (9630539783808).

Almost surely, 2^{101112121110021} is an apocalyptic number.

It is an amenable number.

101112121110021 is a deficient number, since it is larger than the sum of its proper divisors (52976515430907).

101112121110021 is a wasteful number, since it uses less digits than its factorization.

101112121110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406981912.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 101112121110021 its reverse (120011121211101), we get a palindrome (221123242321122).

The spelling of 101112121110021 in words is "one hundred one trillion, one hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, twenty-one".