121201210101 has 8 divisors (see below), whose sum is σ = 161610164320. Its totient is φ = 80796531312.

The previous prime is 121201210027. The next prime is 121201210127. The reversal of 121201210101 is 101012102121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121201210101 - 2⁷ = 121201209973 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 (121201200101) 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, 1002115 + ... + 1116528.

It is an arithmetic number, because the mean of its divisors is an integer number (20201270540).

Almost surely, 2^121201210101 is an apocalyptic number.

It is an amenable number.

121201210101 is a deficient number, since it is larger than the sum of its proper divisors (40408954219).

121201210101 is a wasteful number, since it uses less digits than its factorization.

121201210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137715.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121201210101 its reverse (101012102121), we get a palindrome (222213312222).

It can be divided in two parts, 12120 and 1210101, that added together give a palindrome (1222221).

The spelling of 121201210101 in words is "one hundred twenty-one billion, two hundred one million, two hundred ten thousand, one hundred one".