201212020101 has 4 divisors (see below), whose sum is σ = 268282693472. Its totient is φ = 134141346732.

The previous prime is 201212020081. The next prime is 201212020147. The reversal of 201212020101 is 101020212102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 201212020101 - 2⁵ = 201212020069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212020301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33535336681 + ... + 33535336686.

It is an arithmetic number, because the mean of its divisors is an integer number (67070673368).

Almost surely, 2^201212020101 is an apocalyptic number.

It is an amenable number.

201212020101 is a deficient number, since it is larger than the sum of its proper divisors (67070673371).

201212020101 is an equidigital number, since it uses as much as digits as its factorization.

201212020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67070673370.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201212020101 its reverse (101020212102), we get a palindrome (302232232203).

The spelling of 201212020101 in words is "two hundred one billion, two hundred twelve million, twenty thousand, one hundred one".