20120202101 has 2 divisors, whose sum is σ = 20120202102. Its totient is φ = 20120202100.

The previous prime is 20120202097. The next prime is 20120202107. The reversal of 20120202101 is 10120202102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10467336100 + 9652866001 = 102310^2 + 98249^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120202101 - 2² = 20120202097 is a prime.

It is a super-3 number, since 3×20120202101³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120202107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060101050 + 10060101051.

It is an arithmetic number, because the mean of its divisors is an integer number (10060101051).

Almost surely, 2^20120202101 is an apocalyptic number.

It is an amenable number.

20120202101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120202101 is an equidigital number, since it uses as much as digits as its factorization.

20120202101 is an evil number, because the sum of its binary digits is even.

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

Adding to 20120202101 its reverse (10120202102), we get a palindrome (30240404203).

Subtracting from 20120202101 its reverse (10120202102), we obtain a palindrome (9999999999).

The spelling of 20120202101 in words is "twenty billion, one hundred twenty million, two hundred two thousand, one hundred one".