20011210097 has 16 divisors (see below), whose sum is σ = 20577228672. Its totient is φ = 19450005120.

The previous prime is 20011210091. The next prime is 20011210123. The reversal of 20011210097 is 79001211002.

It is a cyclic number.

It is not a de Polignac number, because 20011210097 - 2⁴ = 20011210081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011210091) 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, 12529703 + ... + 12531299.

It is an arithmetic number, because the mean of its divisors is an integer number (1286076792).

Almost surely, 2^20011210097 is an apocalyptic number.

It is an amenable number.

20011210097 is a deficient number, since it is larger than the sum of its proper divisors (566018575).

20011210097 is a wasteful number, since it uses less digits than its factorization.

20011210097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888.

The product of its (nonzero) digits is 252, while the sum is 23.

Adding to 20011210097 its reverse (79001211002), we get a palindrome (99012421099).

The spelling of 20011210097 in words is "twenty billion, eleven million, two hundred ten thousand, ninety-seven".