201221121200102 has 32 divisors (see below), whose sum is σ = 309572203069440. Its totient is φ = 98049125734560.

The previous prime is 201221121200087. The next prime is 201221121200107. The reversal of 201221121200102 is 201002121122102.

It is a super-2 number, since 2×201221121200102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221121200107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41224043 + ... + 45846089.

It is an arithmetic number, because the mean of its divisors is an integer number (9674131345920).

Almost surely, 2^{201221121200102} is an apocalyptic number.

201221121200102 is a deficient number, since it is larger than the sum of its proper divisors (108351081869338).

201221121200102 is a wasteful number, since it uses less digits than its factorization.

201221121200102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624076.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201221121200102 its reverse (201002121122102), we get a palindrome (402223242322204).

The spelling of 201221121200102 in words is "two hundred one trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred thousand, one hundred two".