20210101197 has 32 divisors (see below), whose sum is σ = 31673932416. Its totient is φ = 11300582400.

The previous prime is 20210101183. The next prime is 20210101199. The reversal of 20210101197 is 79110101202.

It is not a de Polignac number, because 20210101197 - 2¹⁶ = 20210035661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210101199) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 912697 + ... + 934577.

It is an arithmetic number, because the mean of its divisors is an integer number (989810388).

Almost surely, 2^20210101197 is an apocalyptic number.

It is an amenable number.

20210101197 is a deficient number, since it is larger than the sum of its proper divisors (11463831219).

20210101197 is a wasteful number, since it uses less digits than its factorization.

20210101197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24061.

The product of its (nonzero) digits is 252, while the sum is 24.

Adding to 20210101197 its reverse (79110101202), we get a palindrome (99320202399).

The spelling of 20210101197 in words is "twenty billion, two hundred ten million, one hundred one thousand, one hundred ninety-seven".