101121011021 has 8 divisors (see below), whose sum is σ = 101308272000. Its totient is φ = 100933812720.

The previous prime is 101121011009. The next prime is 101121011023. The reversal of 101121011021 is 120110121101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101121011021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101121010993 and 101121011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121011023) 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, 4276451 + ... + 4300031.

It is an arithmetic number, because the mean of its divisors is an integer number (12663534000).

Almost surely, 2^101121011021 is an apocalyptic number.

It is an amenable number.

101121011021 is a deficient number, since it is larger than the sum of its proper divisors (187260979).

101121011021 is an equidigital number, since it uses as much as digits as its factorization.

101121011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31339.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 101121011021 its reverse (120110121101), we get a palindrome (221231132122).

The spelling of 101121011021 in words is "one hundred one billion, one hundred twenty-one million, eleven thousand, twenty-one".