1020000021102 has 24 divisors (see below), whose sum is σ = 2219485033584. Its totient is φ = 338540778144.

The previous prime is 1020000021017. The next prime is 1020000021121. The reversal of 1020000021102 is 2011200000201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

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, 121598098 + ... + 121606485.

It is an arithmetic number, because the mean of its divisors is an integer number (92478543066).

Almost surely, 2^{1020000021102} is an apocalyptic number.

1020000021102 is an abundant number, since it is smaller than the sum of its proper divisors (1199485012482).

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

1020000021102 is a wasteful number, since it uses less digits than its factorization.

1020000021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243204824 (or 243204821 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1020000021102 its reverse (2011200000201), we get a palindrome (3031200021303).

The spelling of 1020000021102 in words is "one trillion, twenty billion, twenty-one thousand, one hundred two".