100121202021021 has 8 divisors (see below), whose sum is σ = 133503052767744. Its totient is φ = 66743409644160.

The previous prime is 100121202020969. The next prime is 100121202021041. The reversal of 100121202021021 is 120120202121001.

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

It is not a de Polignac number, because 100121202021021 - 2¹⁹ = 100121201496733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121202021041) 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, 1014534900 + ... + 1014633581.

It is an arithmetic number, because the mean of its divisors is an integer number (16687881595968).

Almost surely, 2^{100121202021021} is an apocalyptic number.

It is an amenable number.

100121202021021 is a deficient number, since it is larger than the sum of its proper divisors (33381850746723).

100121202021021 is a wasteful number, since it uses less digits than its factorization.

100121202021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029184931.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100121202021021 its reverse (120120202121001), we get a palindrome (220241404142022).

The spelling of 100121202021021 in words is "one hundred trillion, one hundred twenty-one billion, two hundred two million, twenty-one thousand, twenty-one".