1020012222100 has 72 divisors (see below), whose sum is σ = 2231352962048. Its totient is φ = 404701920000.

The previous prime is 1020012222071. The next prime is 1020012222101. The reversal of 1020012222100 is 12222100201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020012222101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113317600 + ... + 113326600.

Almost surely, 2^{1020012222100} is an apocalyptic number.

1020012222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020012222100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1115676481024).

1020012222100 is an abundant number, since it is smaller than the sum of its proper divisors (1211340739948).

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

1020012222100 is a wasteful number, since it uses less digits than its factorization.

1020012222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18065 (or 18058 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1020012222100 its reverse (12222100201), we get a palindrome (1032234322301).

The spelling of 1020012222100 in words is "one trillion, twenty billion, twelve million, two hundred twenty-two thousand, one hundred".