20121202222002 has 128 divisors (see below), whose sum is σ = 54496699084800. Its totient is φ = 5371817004288.

The previous prime is 20121202221983. The next prime is 20121202222003. The reversal of 20121202222002 is 20022220212102.

20121202222002 is a `hidden beast` number, since 201 + 21 + 20 + 222 + 200 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (20121202222003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10370158 + ... + 12156585.

It is an arithmetic number, because the mean of its divisors is an integer number (425755461600).

Almost surely, 2^{20121202222002} is an apocalyptic number.

20121202222002 is an abundant number, since it is smaller than the sum of its proper divisors (34375496862798).

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

20121202222002 is a wasteful number, since it uses less digits than its factorization.

20121202222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22526917 (or 22526911 counting only the distinct ones).

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

Adding to 20121202222002 its reverse (20022220212102), we get a palindrome (40143422434104).

The spelling of 20121202222002 in words is "twenty trillion, one hundred twenty-one billion, two hundred two million, two hundred twenty-two thousand, two".