220121221002 has 8 divisors (see below), whose sum is σ = 440242442016. Its totient is φ = 73373740332.

The previous prime is 220121220953. The next prime is 220121221003. The reversal of 220121221002 is 200122121022.

220121221002 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

220121221002 is an admirable number.

It is a super-2 number, since 2×220121221002² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220121221003) 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, 18343435078 + ... + 18343435089.

It is an arithmetic number, because the mean of its divisors is an integer number (55030305252).

Almost surely, 2^220121221002 is an apocalyptic number.

220121221002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220121221002 is a wasteful number, since it uses less digits than its factorization.

220121221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36686870172.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220121221002 its reverse (200122121022), we get a palindrome (420243342024).

The spelling of 220121221002 in words is "two hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, two".