21221211112098 has 32 divisors (see below), whose sum is σ = 42839751251520. Its totient is φ = 7007517603840.

The previous prime is 21221211112097. The next prime is 21221211112181. The reversal of 21221211112098 is 89021111212212.

It is not an unprimeable number, because it can be changed into a prime (21221211112091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47677458 + ... + 48120498.

It is an arithmetic number, because the mean of its divisors is an integer number (1338742226610).

Almost surely, 2^{21221211112098} is an apocalyptic number.

21221211112098 is an abundant number, since it is smaller than the sum of its proper divisors (21618540139422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21221211112098 is a wasteful number, since it uses less digits than its factorization.

21221211112098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517762.

The product of its (nonzero) digits is 2304, while the sum is 33.

The spelling of 21221211112098 in words is "twenty-one trillion, two hundred twenty-one billion, two hundred eleven million, one hundred twelve thousand, ninety-eight".