12202021001 has 4 divisors (see below), whose sum is σ = 12220481604. Its totient is φ = 12183560400.

The previous prime is 12202020979. The next prime is 12202021049. The reversal of 12202021001 is 10012020221.

It is a happy number.

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 5048244601 + 7153776400 = 71051^2 + 84580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12202021001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12202021081) 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, 9229310 + ... + 9230631.

It is an arithmetic number, because the mean of its divisors is an integer number (3055120401).

Almost surely, 2^12202021001 is an apocalyptic number.

It is an amenable number.

12202021001 is a deficient number, since it is larger than the sum of its proper divisors (18460603).

12202021001 is an equidigital number, since it uses as much as digits as its factorization.

12202021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18460602.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12202021001 its reverse (10012020221), we get a palindrome (22214041222).

The spelling of 12202021001 in words is "twelve billion, two hundred two million, twenty-one thousand, one".