121002021101 has 8 divisors (see below), whose sum is σ = 130313598744. Its totient is φ = 111690976320.

The previous prime is 121002021079. The next prime is 121002021131. The reversal of 121002021101 is 101120200121.

It can be written as a sum of positive squares in 4 ways, for example, as 25672371076 + 95329650025 = 160226^2 + 308755^2 .

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 121002021101 - 2²⁶ = 120934912237 is a prime.

It is a super-2 number, since 2×121002021101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002021131) 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, 425111 + ... + 650171.

It is an arithmetic number, because the mean of its divisors is an integer number (16289199843).

Almost surely, 2^121002021101 is an apocalyptic number.

It is an amenable number.

121002021101 is a deficient number, since it is larger than the sum of its proper divisors (9311577643).

121002021101 is a wasteful number, since it uses less digits than its factorization.

121002021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266431.

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

Adding to 121002021101 its reverse (101120200121), we get a palindrome (222122221222).

The spelling of 121002021101 in words is "one hundred twenty-one billion, two million, twenty-one thousand, one hundred one".