202100121101001 has 4 divisors (see below), whose sum is σ = 269466828134672. Its totient is φ = 134733414067332.

The previous prime is 202100121100967. The next prime is 202100121101017. The reversal of 202100121101001 is 100101121001202.

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 not a de Polignac number, because 202100121101001 - 2²⁷ = 202099986883273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202100121101701) 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, 33683353516831 + ... + 33683353516836.

It is an arithmetic number, because the mean of its divisors is an integer number (67366707033668).

Almost surely, 2^{202100121101001} is an apocalyptic number.

It is an amenable number.

202100121101001 is a deficient number, since it is larger than the sum of its proper divisors (67366707033671).

202100121101001 is an equidigital number, since it uses as much as digits as its factorization.

202100121101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67366707033670.

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

Adding to 202100121101001 its reverse (100101121001202), we get a palindrome (302201242102203).

The spelling of 202100121101001 in words is "two hundred two trillion, one hundred billion, one hundred twenty-one million, one hundred one thousand, one".