20221100121 has 8 divisors (see below), whose sum is σ = 26964173824. Its totient is φ = 13479379920.

The previous prime is 20221100051. The next prime is 20221100153. The reversal of 20221100121 is 12100112202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20221100121 - 2¹⁵ = 20221067353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20221100097 and 20221100106.

It is not an unprimeable number, because it can be changed into a prime (20221100161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302986 + ... + 363651.

It is an arithmetic number, because the mean of its divisors is an integer number (3370521728).

Almost surely, 2^20221100121 is an apocalyptic number.

It is an amenable number.

20221100121 is a deficient number, since it is larger than the sum of its proper divisors (6743073703).

20221100121 is a wasteful number, since it uses less digits than its factorization.

20221100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676751.

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

Adding to 20221100121 its reverse (12100112202), we get a palindrome (32321212323).

The spelling of 20221100121 in words is "twenty billion, two hundred twenty-one million, one hundred thousand, one hundred twenty-one".