100012122120021 has 8 divisors (see below), whose sum is σ = 133637508032640. Its totient is φ = 66530742143712.

The previous prime is 100012122119977. The next prime is 100012122120023. The reversal of 100012122120021 is 120021221210001.

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

It is not a de Polignac number, because 100012122120021 - 2⁹ = 100012122119509 is a prime.

It is a super-3 number, since 3×100012122120021³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100012122120023) 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, 36001482456 + ... + 36001485233.

It is an arithmetic number, because the mean of its divisors is an integer number (16704688504080).

Almost surely, 2^{100012122120021} is an apocalyptic number.

It is an amenable number.

100012122120021 is a deficient number, since it is larger than the sum of its proper divisors (33625385912619).

100012122120021 is an equidigital number, since it uses as much as digits as its factorization.

100012122120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72002968155.

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

Adding to 100012122120021 its reverse (120021221210001), we get a palindrome (220033343330022).

The spelling of 100012122120021 in words is "one hundred trillion, twelve billion, one hundred twenty-two million, one hundred twenty thousand, twenty-one".