121120200102001 has 4 divisors (see below), whose sum is σ = 121209193637604. Its totient is φ = 121031206566400.

The previous prime is 121120200101977. The next prime is 121120200102017. The reversal of 121120200102001 is 100201002021121.

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 56277363326976 + 64842836775025 = 7501824^2 + 8052505^2 .

It is a cyclic number.

It is not a de Polignac number, because 121120200102001 - 2²³ = 121120191713393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121120200102301) 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, 44496765760 + ... + 44496768481.

It is an arithmetic number, because the mean of its divisors is an integer number (30302298409401).

Almost surely, 2^{121120200102001} is an apocalyptic number.

It is an amenable number.

121120200102001 is a deficient number, since it is larger than the sum of its proper divisors (88993535603).

121120200102001 is an equidigital number, since it uses as much as digits as its factorization.

121120200102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88993535602.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121120200102001 its reverse (100201002021121), we get a palindrome (221321202123122).

The spelling of 121120200102001 in words is "one hundred twenty-one trillion, one hundred twenty billion, two hundred million, one hundred two thousand, one".