20102122001 has 16 divisors (see below), whose sum is σ = 21812099904. Its totient is φ = 18415907904.

The previous prime is 20102121997. The next prime is 20102122031. The reversal of 20102122001 is 10022120102.

20102122001 = T₄₄₄ + T₄₄₅ + ... + T₄₉₄₁.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20102122001 - 2² = 20102121997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102122031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1312550 + ... + 1327776.

It is an arithmetic number, because the mean of its divisors is an integer number (1363256244).

Almost surely, 2^20102122001 is an apocalyptic number.

It is an amenable number.

20102122001 is a deficient number, since it is larger than the sum of its proper divisors (1709977903).

20102122001 is a wasteful number, since it uses less digits than its factorization.

20102122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16000.

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

Adding to 20102122001 its reverse (10022120102), we get a palindrome (30124242103).

The spelling of 20102122001 in words is "twenty billion, one hundred two million, one hundred twenty-two thousand, one".