1202000122091 has 4 divisors (see below), whose sum is σ = 1202010422184. Its totient is φ = 1201989822000.

The previous prime is 1202000122087. The next prime is 1202000122153. The reversal of 1202000122091 is 1902210002021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1202000122091 - 2² = 1202000122087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1202000127091) 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, 4972970 + ... + 5209071.

It is an arithmetic number, because the mean of its divisors is an integer number (300502605546).

Almost surely, 2^{1202000122091} is an apocalyptic number.

1202000122091 is a deficient number, since it is larger than the sum of its proper divisors (10300093).

1202000122091 is a wasteful number, since it uses less digits than its factorization.

1202000122091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10300092.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 1202000122091 in words is "one trillion, two hundred two billion, one hundred twenty-two thousand, ninety-one".