1002211210121 has 4 divisors (see below), whose sum is σ = 1093321320144. Its totient is φ = 911101100100.

The previous prime is 1002211210093. The next prime is 1002211210127. The reversal of 1002211210121 is 1210121122001.

1002211210121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002211210121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002211210096 and 1002211210105.

It is not an unprimeable number, because it can be changed into a prime (1002211210127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45555054995 + ... + 45555055016.

It is an arithmetic number, because the mean of its divisors is an integer number (273330330036).

Almost surely, 2^{1002211210121} is an apocalyptic number.

1002211210121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1002211210121 is a deficient number, since it is larger than the sum of its proper divisors (91110110023).

1002211210121 is an equidigital number, since it uses as much as digits as its factorization.

1002211210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91110110022.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1002211210121 its reverse (1210121122001), we get a palindrome (2212332332122).

The spelling of 1002211210121 in words is "one trillion, two billion, two hundred eleven million, two hundred ten thousand, one hundred twenty-one".