101121221021 has 8 divisors (see below), whose sum is σ = 105780942144. Its totient is φ = 96483428800.

The previous prime is 101121221017. The next prime is 101121221039. The reversal of 101121221021 is 120122121101.

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 101121221021 - 2² = 101121221017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101121220987 and 101121221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121221011) 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, 5472791 + ... + 5491236.

It is an arithmetic number, because the mean of its divisors is an integer number (13222617768).

Almost surely, 2^101121221021 is an apocalyptic number.

It is an amenable number.

101121221021 is a deficient number, since it is larger than the sum of its proper divisors (4659721123).

101121221021 is a wasteful number, since it uses less digits than its factorization.

101121221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10964451.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101121221021 its reverse (120122121101), we get a palindrome (221243342122).

The spelling of 101121221021 in words is "one hundred one billion, one hundred twenty-one million, two hundred twenty-one thousand, twenty-one".