10011012102 has 120 divisors (see below), whose sum is σ = 27760944816. Its totient is φ = 2640216384.

The previous prime is 10011012073. The next prime is 10011012103. The reversal of 10011012102 is 20121011001.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011012103) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 165528 + ... + 217764.

Almost surely, 2^10011012102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10011012102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13880472408).

10011012102 is an abundant number, since it is smaller than the sum of its proper divisors (17749932714).

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

10011012102 is a wasteful number, since it uses less digits than its factorization.

10011012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52284 (or 52262 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10011012102 its reverse (20121011001), we get a palindrome (30132023103).

The spelling of 10011012102 in words is "ten billion, eleven million, twelve thousand, one hundred two".