20212101222002 has 32 divisors (see below), whose sum is σ = 33805945615680. Its totient is φ = 9007016624640.

The previous prime is 20212101221999. The next prime is 20212101222023. The reversal of 20212101222002 is 20022210121202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5384888 + ... + 8331939.

It is an arithmetic number, because the mean of its divisors is an integer number (1056435800490).

Almost surely, 2^{20212101222002} is an apocalyptic number.

20212101222002 is a deficient number, since it is larger than the sum of its proper divisors (13593844393678).

20212101222002 is a wasteful number, since it uses less digits than its factorization.

20212101222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13719146.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20212101222002 its reverse (20022210121202), we get a palindrome (40234311343204).

The spelling of 20212101222002 in words is "twenty trillion, two hundred twelve billion, one hundred one million, two hundred twenty-two thousand, two".