2102020221222 has 64 divisors (see below), whose sum is σ = 4728840480000. Its totient is φ = 692025764544.

The previous prime is 2102020221221. The next prime is 2102020221233. The reversal of 2102020221222 is 2221220202012.

2102020221222 is a `hidden beast` number, since 21 + 0 + 202 + 0 + 221 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2102020221195 and 2102020221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102020221221) 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, 15390429 + ... + 15526407.

It is an arithmetic number, because the mean of its divisors is an integer number (73888132500).

Almost surely, 2^{2102020221222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102020221222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2364420240000).

2102020221222 is an abundant number, since it is smaller than the sum of its proper divisors (2626820258778).

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

2102020221222 is a wasteful number, since it uses less digits than its factorization.

2102020221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139522 (or 139516 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2102020221222 its reverse (2221220202012), we get a palindrome (4323240423234).

The spelling of 2102020221222 in words is "two trillion, one hundred two billion, twenty million, two hundred twenty-one thousand, two hundred twenty-two".