20122001220101 has 4 divisors (see below), whose sum is σ = 21951274058304. Its totient is φ = 18292728381900.

The previous prime is 20122001220091. The next prime is 20122001220151. The reversal of 20122001220101 is 10102210022102.

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 20122001220101 - 2²² = 20121997025797 is a prime.

It is a super-2 number, since 2×20122001220101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122001220151) 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, 914636419085 + ... + 914636419106.

It is an arithmetic number, because the mean of its divisors is an integer number (5487818514576).

Almost surely, 2^{20122001220101} is an apocalyptic number.

It is an amenable number.

20122001220101 is a deficient number, since it is larger than the sum of its proper divisors (1829272838203).

20122001220101 is a wasteful number, since it uses less digits than its factorization.

20122001220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829272838202.

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

Adding to 20122001220101 its reverse (10102210022102), we get a palindrome (30224211242203).

The spelling of 20122001220101 in words is "twenty trillion, one hundred twenty-two billion, one million, two hundred twenty thousand, one hundred one".