121102102001 has 4 divisors (see below), whose sum is σ = 121199062500. Its totient is φ = 121005141504.

The previous prime is 121102101997. The next prime is 121102102019. The reversal of 121102102001 is 100201201121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59138944225 + 61963157776 = 243185^2 + 248924^2 .

It is a cyclic number.

It is not a de Polignac number, because 121102102001 - 2² = 121102101997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121102102061) 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, 48478376 + ... + 48480873.

It is an arithmetic number, because the mean of its divisors is an integer number (30299765625).

Almost surely, 2^121102102001 is an apocalyptic number.

It is an amenable number.

121102102001 is a deficient number, since it is larger than the sum of its proper divisors (96960499).

121102102001 is an equidigital number, since it uses as much as digits as its factorization.

121102102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96960498.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121102102001 its reverse (100201201121), we get a palindrome (221303303122).

The spelling of 121102102001 in words is "one hundred twenty-one billion, one hundred two million, one hundred two thousand, one".