221212200101202 has 24 divisors (see below), whose sum is σ = 480293712138240. Its totient is φ = 73583459738520.

The previous prime is 221212200101173. The next prime is 221212200101237. The reversal of 221212200101202 is 202101002212122.

It is a happy number.

221212200101202 is a `hidden beast` number, since 22 + 121 + 220 + 0 + 101 + 202 = 666.

221212200101202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221212200101202² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12828349074 + ... + 12828366317.

It is an arithmetic number, because the mean of its divisors is an integer number (20012238005760).

Almost surely, 2^{221212200101202} is an apocalyptic number.

221212200101202 is an abundant number, since it is smaller than the sum of its proper divisors (259081512037038).

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

221212200101202 is a wasteful number, since it uses less digits than its factorization.

221212200101202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25656715878 (or 25656715875 counting only the distinct ones).

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

Adding to 221212200101202 its reverse (202101002212122), we get a palindrome (423313202313324).

The spelling of 221212200101202 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred million, one hundred one thousand, two hundred two".