1002211220021 has 16 divisors (see below), whose sum is σ = 1098670276608. Its totient is φ = 906654394800.

The previous prime is 1002211220011. The next prime is 1002211220039. The reversal of 1002211220021 is 1200221122001.

1002211220021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1002211220021 - 2¹⁰ = 1002211218997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002211219978 and 1002211220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002211220011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1601036 + ... + 2137226.

It is an arithmetic number, because the mean of its divisors is an integer number (68666892288).

Almost surely, 2^{1002211220021} is an apocalyptic number.

1002211220021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1002211220021 is a deficient number, since it is larger than the sum of its proper divisors (96459056587).

1002211220021 is a wasteful number, since it uses less digits than its factorization.

1002211220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537032.

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

Adding to 1002211220021 its reverse (1200221122001), we get a palindrome (2202432342022).

The spelling of 1002211220021 in words is "one trillion, two billion, two hundred eleven million, two hundred twenty thousand, twenty-one".