121211020231001 has 16 divisors (see below), whose sum is σ = 130026385987200. Its totient is φ = 112640187299328.

The previous prime is 121211020230973. The next prime is 121211020231003. The reversal of 121211020231001 is 100132020112121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121211020231001 - 2⁴⁶ = 50842276053337 is a prime.

It is a super-2 number, since 2×121211020231001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121211020231003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8579096 + ... + 17777033.

It is an arithmetic number, because the mean of its divisors is an integer number (8126649124200).

Almost surely, 2^{121211020231001} is an apocalyptic number.

It is an amenable number.

121211020231001 is a deficient number, since it is larger than the sum of its proper divisors (8815365756199).

121211020231001 is a wasteful number, since it uses less digits than its factorization.

121211020231001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26360768.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121211020231001 its reverse (100132020112121), we get a palindrome (221343040343122).

The spelling of 121211020231001 in words is "one hundred twenty-one trillion, two hundred eleven billion, twenty million, two hundred thirty-one thousand, one".