20022221112102 has 48 divisors (see below), whose sum is σ = 47784718395648. Its totient is φ = 6008433513840.

The previous prime is 20022221112073. The next prime is 20022221112107. The reversal of 20022221112102 is 20121112222002.

It is a happy number.

20022221112102 is a `hidden beast` number, since 20 + 0 + 222 + 211 + 1 + 210 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022221112107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 490864698 + ... + 490905485.

It is an arithmetic number, because the mean of its divisors is an integer number (995514966576).

Almost surely, 2^{20022221112102} is an apocalyptic number.

20022221112102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20022221112102 is an abundant number, since it is smaller than the sum of its proper divisors (27762497283546).

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

20022221112102 is a wasteful number, since it uses less digits than its factorization.

20022221112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981770305 (or 981770302 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20022221112102 its reverse (20121112222002), we get a palindrome (40143333334104).

The spelling of 20022221112102 in words is "twenty trillion, twenty-two billion, two hundred twenty-one million, one hundred twelve thousand, one hundred two".