1011020011002 has 48 divisors (see below), whose sum is σ = 2266428772608. Its totient is φ = 325382209920.

The previous prime is 1011020010991. The next prime is 1011020011003. The reversal of 1011020011002 is 2001100201101.

It is a happy number.

It is a super-2 number, since 2×1011020011002² (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 not an unprimeable number, because it can be changed into a prime (1011020011003) 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, 1850608 + ... + 2333835.

It is an arithmetic number, because the mean of its divisors is an integer number (47217266096).

Almost surely, 2^{1011020011002} is an apocalyptic number.

1011020011002 is an abundant number, since it is smaller than the sum of its proper divisors (1255408761606).

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

1011020011002 is a wasteful number, since it uses less digits than its factorization.

1011020011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4184915 (or 4184912 counting only the distinct ones).

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

Adding to 1011020011002 its reverse (2001100201101), we get a palindrome (3012120212103).

The spelling of 1011020011002 in words is "one trillion, eleven billion, twenty million, eleven thousand, two".