100121020010021 has 8 divisors (see below), whose sum is σ = 100796822085600. Its totient is φ = 99447466860720.

The previous prime is 100121020009957. The next prime is 100121020010023. The reversal of 100121020010021 is 120010020121001.

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

It is a cyclic number.

It is not a de Polignac number, because 100121020010021 - 2⁶ = 100121020009957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100121020009984 and 100121020010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121020010023) 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, 562142231 + ... + 562320308.

It is an arithmetic number, because the mean of its divisors is an integer number (12599602760700).

Almost surely, 2^{100121020010021} is an apocalyptic number.

It is an amenable number.

100121020010021 is a deficient number, since it is larger than the sum of its proper divisors (675802075579).

100121020010021 is a wasteful number, since it uses less digits than its factorization.

100121020010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124463139.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100121020010021 its reverse (120010020121001), we get a palindrome (220131040131022).

The spelling of 100121020010021 in words is "one hundred trillion, one hundred twenty-one billion, twenty million, ten thousand, twenty-one".