201001021000122 has 64 divisors (see below), whose sum is σ = 460797449508864. Its totient is φ = 57258298372800.

The previous prime is 201001021000121. The next prime is 201001021000123. The reversal of 201001021000122 is 221000120100102.

It is an interprime number because it is at equal distance from previous prime (201001021000121) and next prime (201001021000123).

It is a junction number, because it is equal to n+sod(n) for n = 201001021000098 and 201001021000107.

It is not an unprimeable number, because it can be changed into a prime (201001021000121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13773073 + ... + 24324875.

It is an arithmetic number, because the mean of its divisors is an integer number (7199960148576).

Almost surely, 2^{201001021000122} is an apocalyptic number.

201001021000122 is an abundant number, since it is smaller than the sum of its proper divisors (259796428508742).

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

201001021000122 is a wasteful number, since it uses less digits than its factorization.

201001021000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10553163.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201001021000122 its reverse (221000120100102), we get a palindrome (422001141100224).

The spelling of 201001021000122 in words is "two hundred one trillion, one billion, twenty-one million, one hundred twenty-two", and thus it is an aban number.