20202220121 has 8 divisors (see below), whose sum is σ = 20395858560. Its totient is φ = 20008732752.

The previous prime is 20202220111. The next prime is 20202220127. The reversal of 20202220121 is 12102220202.

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

It is a cyclic number.

It is not a de Polignac number, because 20202220121 - 2⁶ = 20202220057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20202220096 and 20202220105.

It is not an unprimeable number, because it can be changed into a prime (20202220127) 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, 240746 + ... + 313628.

It is an arithmetic number, because the mean of its divisors is an integer number (2549482320).

Almost surely, 2^20202220121 is an apocalyptic number.

It is an amenable number.

20202220121 is a deficient number, since it is larger than the sum of its proper divisors (193638439).

20202220121 is a wasteful number, since it uses less digits than its factorization.

20202220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75535.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20202220121 its reverse (12102220202), we get a palindrome (32304440323).

The spelling of 20202220121 in words is "twenty billion, two hundred two million, two hundred twenty thousand, one hundred twenty-one".