2221947829528 has 48 divisors (see below), whose sum is σ = 4856853355200. Its totient is φ = 950197631040.

The previous prime is 2221947829523. The next prime is 2221947829529. The reversal of 2221947829528 is 8259287491222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221947829523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5967048 + ... + 6328471.

It is an arithmetic number, because the mean of its divisors is an integer number (101184444900).

Almost surely, 2^{2221947829528} is an apocalyptic number.

2221947829528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2221947829528 is an abundant number, since it is smaller than the sum of its proper divisors (2634905525672).

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

2221947829528 is a wasteful number, since it uses less digits than its factorization.

2221947829528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12296000 (or 12295989 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 61.

The spelling of 2221947829528 in words is "two trillion, two hundred twenty-one billion, nine hundred forty-seven million, eight hundred twenty-nine thousand, five hundred twenty-eight".