10220002121 has 4 divisors (see below), whose sum is σ = 11680002432. Its totient is φ = 8760001812.

The previous prime is 10220002087. The next prime is 10220002123. The reversal of 10220002121 is 12120002201.

It is a happy number.

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 not a de Polignac number, because 10220002121 - 2⁶ = 10220002057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10220002123) 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, 730000145 + ... + 730000158.

It is an arithmetic number, because the mean of its divisors is an integer number (2920000608).

Almost surely, 2^10220002121 is an apocalyptic number.

It is an amenable number.

10220002121 is a deficient number, since it is larger than the sum of its proper divisors (1460000311).

10220002121 is an equidigital number, since it uses as much as digits as its factorization.

10220002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460000310.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10220002121 its reverse (12120002201), we get a palindrome (22340004322).

The spelling of 10220002121 in words is "ten billion, two hundred twenty million, two thousand, one hundred twenty-one".