121121220101 has 32 divisors (see below), whose sum is σ = 148181944320. Its totient is φ = 96636672000.

The previous prime is 121121220097. The next prime is 121121220107. The reversal of 121121220101 is 101022121121.

It is a cyclic number.

It is not a de Polignac number, because 121121220101 - 2² = 121121220097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121220107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11905745 + ... + 11915913.

It is an arithmetic number, because the mean of its divisors is an integer number (4630685760).

Almost surely, 2^121121220101 is an apocalyptic number.

It is an amenable number.

121121220101 is a deficient number, since it is larger than the sum of its proper divisors (27060724219).

121121220101 is a wasteful number, since it uses less digits than its factorization.

121121220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11285.

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

Adding to 121121220101 its reverse (101022121121), we get a palindrome (222143341222).

The spelling of 121121220101 in words is "one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty thousand, one hundred one".