121202101211001 has 16 divisors (see below), whose sum is σ = 171109535120064. Its totient is φ = 76048072185344.

The previous prime is 121202101210973. The next prime is 121202101211017. The reversal of 121202101211001 is 100112101202121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121202101211001 - 2³¹ = 121199953727353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121202101211021) 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, 8427301 + ... + 17703773.

It is an arithmetic number, because the mean of its divisors is an integer number (10694345945004).

Almost surely, 2^{121202101211001} is an apocalyptic number.

It is an amenable number.

121202101211001 is a deficient number, since it is larger than the sum of its proper divisors (49907433909063).

121202101211001 is a wasteful number, since it uses less digits than its factorization.

121202101211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9532680.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121202101211001 its reverse (100112101202121), we get a palindrome (221314202413122).

The spelling of 121202101211001 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred one million, two hundred eleven thousand, one".