121101020101 has 4 divisors (see below), whose sum is σ = 122300040204. Its totient is φ = 119902000000.

The previous prime is 121101020093. The next prime is 121101020107. The reversal of 121101020101 is 101020101121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 118335312001 + 2765708100 = 343999^2 + 52590^2 .

It is a cyclic number.

It is not a de Polignac number, because 121101020101 - 2³ = 121101020093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101020107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599509900 + ... + 599510101.

It is an arithmetic number, because the mean of its divisors is an integer number (30575010051).

Almost surely, 2^121101020101 is an apocalyptic number.

It is an amenable number.

121101020101 is a deficient number, since it is larger than the sum of its proper divisors (1199020103).

121101020101 is a wasteful number, since it uses less digits than its factorization.

121101020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199020102.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121101020101 its reverse (101020101121), we get a palindrome (222121121222).

It can be divided in two parts, 121101020 and 101, that added together give a palindrome (121101121).

The spelling of 121101020101 in words is "one hundred twenty-one billion, one hundred one million, twenty thousand, one hundred one".