1020010111002 has 48 divisors (see below), whose sum is σ = 2212854370272. Its totient is φ = 339567832800.

The previous prime is 1020010110991. The next prime is 1020010111027. The reversal of 1020010111002 is 2001110100201.

It is a happy number.

It is a super-2 number, since 2×1020010111002² (a number of 25 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73338133 + ... + 73352039.

It is an arithmetic number, because the mean of its divisors is an integer number (46101132714).

Almost surely, 2^{1020010111002} is an apocalyptic number.

1020010111002 is an abundant number, since it is smaller than the sum of its proper divisors (1192844259270).

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

1020010111002 is a wasteful number, since it uses less digits than its factorization.

1020010111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18843 (or 18840 counting only the distinct ones).

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

Adding to 1020010111002 its reverse (2001110100201), we get a palindrome (3021120211203).

The spelling of 1020010111002 in words is "one trillion, twenty billion, ten million, one hundred eleven thousand, two".