1012021012002 has 128 divisors (see below), whose sum is σ = 2726172868608. Its totient is φ = 241876512000.

The previous prime is 1012021012001. The next prime is 1012021012099. The reversal of 1012021012002 is 2002101202101.

It is not an unprimeable number, because it can be changed into a prime (1012021012001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1638127 + ... + 2169677.

It is an arithmetic number, because the mean of its divisors is an integer number (21298225536).

Almost surely, 2^{1012021012002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012021012002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363086434304).

1012021012002 is an abundant number, since it is smaller than the sum of its proper divisors (1714151856606).

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

1012021012002 is a wasteful number, since it uses less digits than its factorization.

1012021012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531904.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1012021012002 its reverse (2002101202101), we get a palindrome (3014122214103).

It can be divided in two parts, 101202101 and 2002, that multiplied together give a palindrome (202606606202).

The spelling of 1012021012002 in words is "one trillion, twelve billion, twenty-one million, twelve thousand, two".