1020012021002 has 16 divisors (see below), whose sum is σ = 1648081604232. Its totient is φ = 470669099520.

The previous prime is 1020012020959. The next prime is 1020012021029. The reversal of 1020012021002 is 2001202100201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 690858530041 + 329153490961 = 831179^2 + 573719^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4285199 + ... + 4516962.

Almost surely, 2^{1020012021002} is an apocalyptic number.

1020012021002 is a deficient number, since it is larger than the sum of its proper divisors (628069583230).

1020012021002 is a wasteful number, since it uses less digits than its factorization.

1020012021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8806633.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1020012021002 its reverse (2001202100201), we get a palindrome (3021214121203).

The spelling of 1020012021002 in words is "one trillion, twenty billion, twelve million, twenty-one thousand, two".