121011022201021 has 4 divisors (see below), whose sum is σ = 121118779123072. Its totient is φ = 120903265278972.

The previous prime is 121011022201007. The next prime is 121011022201057. The reversal of 121011022201021 is 120102220110121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121011022201021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121011022200986 and 121011022201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011022201061) 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, 53878459341 + ... + 53878461586.

It is an arithmetic number, because the mean of its divisors is an integer number (30279694780768).

Almost surely, 2^{121011022201021} is an apocalyptic number.

It is an amenable number.

121011022201021 is a deficient number, since it is larger than the sum of its proper divisors (107756922051).

121011022201021 is a wasteful number, since it uses less digits than its factorization.

121011022201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107756922050.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121011022201021 its reverse (120102220110121), we get a palindrome (241113242311142).

The spelling of 121011022201021 in words is "one hundred twenty-one trillion, eleven billion, twenty-two million, two hundred one thousand, twenty-one".