1002210121 has 8 divisors (see below), whose sum is σ = 1098504288. Its totient is φ = 906780000.

The previous prime is 1002210113. The next prime is 1002210127. The reversal of 1002210121 is 1210122001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1002210121 - 2³ = 1002210113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002210098 and 1002210107.

It is not an unprimeable number, because it can be changed into a prime (1002210127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213580 + ... + 218221.

It is an arithmetic number, because the mean of its divisors is an integer number (137313036).

Almost surely, 2^1002210121 is an apocalyptic number.

1002210121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1002210121 is a deficient number, since it is larger than the sum of its proper divisors (96294167).

1002210121 is a wasteful number, since it uses less digits than its factorization.

1002210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432023.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1002210121 is about 31657.7023960994. The cubic root of 1002210121 is about 1000.7361649282.

Adding to 1002210121 its reverse (1210122001), we get a palindrome (2212332122).

The spelling of 1002210121 in words is "one billion, two million, two hundred ten thousand, one hundred twenty-one".