101212011221021 has 32 divisors (see below), whose sum is σ = 106572251076480. Its totient is φ = 95991759360000.

The previous prime is 101212011220987. The next prime is 101212011221029. The reversal of 101212011221021 is 120122110212101.

It is a cyclic number.

It is not a de Polignac number, because 101212011221021 - 2¹⁰ = 101212011219997 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 (101212011221029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2578564646 + ... + 2578603896.

It is an arithmetic number, because the mean of its divisors is an integer number (3330382846140).

Almost surely, 2^{101212011221021} is an apocalyptic number.

It is an amenable number.

101212011221021 is a deficient number, since it is larger than the sum of its proper divisors (5360239855459).

101212011221021 is a wasteful number, since it uses less digits than its factorization.

101212011221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46205.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 101212011221021 its reverse (120122110212101), we get a palindrome (221334121433122).

The spelling of 101212011221021 in words is "one hundred one trillion, two hundred twelve billion, eleven million, two hundred twenty-one thousand, twenty-one".