10121100021989 has 8 divisors (see below), whose sum is σ = 11521252199232. Its totient is φ = 8800956540640.

The previous prime is 10121100021887. The next prime is 10121100022001. The reversal of 10121100021989 is 98912000112101.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10121100021989 - 2⁸ = 10121100021733 is a prime.

It is a super-2 number, since 2×10121100021989² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121100021089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20002173704 + ... + 20002174209.

It is an arithmetic number, because the mean of its divisors is an integer number (1440156524904).

Almost surely, 2^{10121100021989} is an apocalyptic number.

It is an amenable number.

10121100021989 is a deficient number, since it is larger than the sum of its proper divisors (1400152177243).

10121100021989 is a wasteful number, since it uses less digits than its factorization.

10121100021989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40004347947.

The product of its (nonzero) digits is 2592, while the sum is 35.

The spelling of 10121100021989 in words is "ten trillion, one hundred twenty-one billion, one hundred million, twenty-one thousand, nine hundred eighty-nine".