101012121021 has 8 divisors (see below), whose sum is σ = 153923232064. Its totient is φ = 57721212000.

The previous prime is 101012121017. The next prime is 101012121031. The reversal of 101012121021 is 120121210101.

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

It is not a de Polignac number, because 101012121021 - 2² = 101012121017 is a prime.

It is a super-2 number, since 2×101012121021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101012120988 and 101012121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101012121011) 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, 2405050480 + ... + 2405050521.

It is an arithmetic number, because the mean of its divisors is an integer number (19240404008).

Almost surely, 2^101012121021 is an apocalyptic number.

It is an amenable number.

101012121021 is a deficient number, since it is larger than the sum of its proper divisors (52911111043).

101012121021 is an equidigital number, since it uses as much as digits as its factorization.

101012121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4810101011.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 101012121021 its reverse (120121210101), we get a palindrome (221133331122).

The spelling of 101012121021 in words is "one hundred one billion, twelve million, one hundred twenty-one thousand, twenty-one".