10002121022 has 4 divisors (see below), whose sum is σ = 15003181536. Its totient is φ = 5001060510.

The previous prime is 10002121007. The next prime is 10002121027. The reversal of 10002121022 is 22012120001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 10002120994 and 10002121012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10002121027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500530254 + ... + 2500530257.

It is an arithmetic number, because the mean of its divisors is an integer number (3750795384).

Almost surely, 2^10002121022 is an apocalyptic number.

10002121022 is a deficient number, since it is larger than the sum of its proper divisors (5001060514).

10002121022 is an equidigital number, since it uses as much as digits as its factorization.

10002121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001060513.

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

Adding to 10002121022 its reverse (22012120001), we get a palindrome (32014241023).

The spelling of 10002121022 in words is "ten billion, two million, one hundred twenty-one thousand, twenty-two".