1021021203122 has 16 divisors (see below), whose sum is σ = 1542248102592. Its totient is φ = 506941018800.

The previous prime is 1021021203113. The next prime is 1021021203143. The reversal of 1021021203122 is 2213021201201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021021203122.

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, 185573 + ... + 1440999.

It is an arithmetic number, because the mean of its divisors is an integer number (96390506412).

Almost surely, 2^{1021021203122} is an apocalyptic number.

1021021203122 is a deficient number, since it is larger than the sum of its proper divisors (521226899470).

1021021203122 is a wasteful number, since it uses less digits than its factorization.

1021021203122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258273.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1021021203122 its reverse (2213021201201), we get a palindrome (3234042404323).

The spelling of 1021021203122 in words is "one trillion, twenty-one billion, twenty-one million, two hundred three thousand, one hundred twenty-two".