201021012222102 has 24 divisors (see below), whose sum is σ = 435547257851784. Its totient is φ = 67006737709344.

The previous prime is 201021012222101. The next prime is 201021012222103. The reversal of 201021012222102 is 201222210120102.

It is a happy number.

201021012222102 is a `hidden beast` number, since 20 + 1 + 0 + 210 + 1 + 222 + 210 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (201021012222101) and next prime (201021012222103).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021012222101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17516503 + ... + 26624610.

It is an arithmetic number, because the mean of its divisors is an integer number (18147802410491).

Almost surely, 2^{201021012222102} is an apocalyptic number.

201021012222102 is an abundant number, since it is smaller than the sum of its proper divisors (234526245629682).

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

201021012222102 is a wasteful number, since it uses less digits than its factorization.

201021012222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44394124 (or 44394121 counting only the distinct ones).

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

Adding to 201021012222102 its reverse (201222210120102), we get a palindrome (402243222342204).

The spelling of 201021012222102 in words is "two hundred one trillion, twenty-one billion, twelve million, two hundred twenty-two thousand, one hundred two".