20213210101 has 16 divisors (see below), whose sum is σ = 23742423040. Its totient is φ = 16850948400.

The previous prime is 20213210089. The next prime is 20213210107. The reversal of 20213210101 is 10101231202.

It is a cyclic number.

It is not a de Polignac number, because 20213210101 - 2²⁵ = 20179655669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213210107) 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, 235725 + ... + 309826.

It is an arithmetic number, because the mean of its divisors is an integer number (1483901440).

Almost surely, 2^20213210101 is an apocalyptic number.

It is an amenable number.

20213210101 is a deficient number, since it is larger than the sum of its proper divisors (3529212939).

20213210101 is an equidigital number, since it uses as much as digits as its factorization.

20213210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545704.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20213210101 its reverse (10101231202), we get a palindrome (30314441303).

The spelling of 20213210101 in words is "twenty billion, two hundred thirteen million, two hundred ten thousand, one hundred one".