221021322002140 has 96 divisors (see below), whose sum is σ = 536150154371328. Its totient is φ = 75640033920000.

The previous prime is 221021322002119. The next prime is 221021322002141. The reversal of 221021322002140 is 41200223120122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221021322002141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77174815 + ... + 79987465.

It is an arithmetic number, because the mean of its divisors is an integer number (5584897441368).

Almost surely, 2^{221021322002140} is an apocalyptic number.

221021322002140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221021322002140 is an abundant number, since it is smaller than the sum of its proper divisors (315128832369188).

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

221021322002140 is a wasteful number, since it uses less digits than its factorization.

221021322002140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833699 (or 2833697 counting only the distinct ones).

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

Adding to 221021322002140 its reverse (41200223120122), we get a palindrome (262221545122262).

The spelling of 221021322002140 in words is "two hundred twenty-one trillion, twenty-one billion, three hundred twenty-two million, two thousand, one hundred forty".