100212402225 has 48 divisors (see below), whose sum is σ = 178935547392. Its totient is φ = 49195407360.

The previous prime is 100212402223. The next prime is 100212402263. The reversal of 100212402225 is 522204212001.

It is not a de Polignac number, because 100212402225 - 2¹ = 100212402223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100212402223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 198592 + ... + 489758.

It is an arithmetic number, because the mean of its divisors is an integer number (3727823904).

Almost surely, 2^100212402225 is an apocalyptic number.

100212402225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100212402225 is a deficient number, since it is larger than the sum of its proper divisors (78723145167).

100212402225 is a wasteful number, since it uses less digits than its factorization.

100212402225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291546 (or 291541 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 100212402225 its reverse (522204212001), we get a palindrome (622416614226).

The spelling of 100212402225 in words is "one hundred billion, two hundred twelve million, four hundred two thousand, two hundred twenty-five".