201212022101 has 4 divisors (see below), whose sum is σ = 209960370912. Its totient is φ = 192463673292.

The previous prime is 201212022073. The next prime is 201212022119. The reversal of 201212022101 is 101220212102.

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 a cyclic number.

It is not a de Polignac number, because 201212022101 - 2¹⁰ = 201212021077 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 (201212022161) 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, 4374174371 + ... + 4374174416.

It is an arithmetic number, because the mean of its divisors is an integer number (52490092728).

Almost surely, 2^201212022101 is an apocalyptic number.

It is an amenable number.

201212022101 is a deficient number, since it is larger than the sum of its proper divisors (8748348811).

201212022101 is an equidigital number, since it uses as much as digits as its factorization.

201212022101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8748348810.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201212022101 its reverse (101220212102), we get a palindrome (302432234203).

The spelling of 201212022101 in words is "two hundred one billion, two hundred twelve million, twenty-two thousand, one hundred one".