20402110403212 has 48 divisors (see below), whose sum is σ = 37870357181440. Its totient is φ = 9600397732800.

The previous prime is 20402110403209. The next prime is 20402110403261. The reversal of 20402110403212 is 21230401120402.

It is a super-2 number, since 2×20402110403212² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8120839 + ... + 10332097.

Almost surely, 2^{20402110403212} is an apocalyptic number.

It is an amenable number.

20402110403212 is a deficient number, since it is larger than the sum of its proper divisors (17468246778228).

20402110403212 is a wasteful number, since it uses less digits than its factorization.

20402110403212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213342 (or 2213340 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20402110403212 its reverse (21230401120402), we get a palindrome (41632511523614).

The spelling of 20402110403212 in words is "twenty trillion, four hundred two billion, one hundred ten million, four hundred three thousand, two hundred twelve".