211221112002 has 16 divisors (see below), whose sum is σ = 422490166272. Its totient is φ = 70399046960.

The previous prime is 211221112001. The next prime is 211221112013. The reversal of 211221112002 is 200211122112.

It is a super-2 number, since 2×211221112002² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211221112001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1940193 + ... + 2046164.

It is an arithmetic number, because the mean of its divisors is an integer number (26405635392).

Almost surely, 2^211221112002 is an apocalyptic number.

211221112002 is an abundant number, since it is smaller than the sum of its proper divisors (211269054270).

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

211221112002 is a wasteful number, since it uses less digits than its factorization.

211221112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3995193.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211221112002 its reverse (200211122112), we get a palindrome (411432234114).

The spelling of 211221112002 in words is "two hundred eleven billion, two hundred twenty-one million, one hundred twelve thousand, two".