21220121101202 has 8 divisors (see below), whose sum is σ = 32080813003776. Its totient is φ = 10526516766612.

The previous prime is 21220121101079. The next prime is 21220121101211. The reversal of 21220121101202 is 20210112102212.

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

It is a super-2 number, since 2×21220121101202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41771891678 + ... + 41771892185.

It is an arithmetic number, because the mean of its divisors is an integer number (4010101625472).

Almost surely, 2^{21220121101202} is an apocalyptic number.

21220121101202 is a deficient number, since it is larger than the sum of its proper divisors (10860691902574).

21220121101202 is a wasteful number, since it uses less digits than its factorization.

21220121101202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83543783992.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21220121101202 its reverse (20210112102212), we get a palindrome (41430233203414).

The spelling of 21220121101202 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty-one million, one hundred one thousand, two hundred two".