2021011220102 has 16 divisors (see below), whose sum is σ = 3513387716352. Its totient is φ = 853948402440.

The previous prime is 2021011220071. The next prime is 2021011220141. The reversal of 2021011220102 is 2010221101202.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1016604248 + ... + 1016606235.

It is an arithmetic number, because the mean of its divisors is an integer number (219586732272).

Almost surely, 2^{2021011220102} is an apocalyptic number.

2021011220102 is a deficient number, since it is larger than the sum of its proper divisors (1492376496250).

2021011220102 is a wasteful number, since it uses less digits than its factorization.

2021011220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033210563.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2021011220102 its reverse (2010221101202), we get a palindrome (4031232321304).

The spelling of 2021011220102 in words is "two trillion, twenty-one billion, eleven million, two hundred twenty thousand, one hundred two".