210002121001220 has 24 divisors (see below), whose sum is σ = 441016303299264. Its totient is φ = 83998591410656.

The previous prime is 210002121001213. The next prime is 210002121001223. The reversal of 210002121001220 is 22100121200012.

It is a super-2 number, since 2×210002121001220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210002121001195 and 210002121001204.

It is not an unprimeable number, because it can be changed into a prime (210002121001223) 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, 140298794 + ... + 141787713.

It is an arithmetic number, because the mean of its divisors is an integer number (18375679304136).

Almost surely, 2^{210002121001220} is an apocalyptic number.

210002121001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210002121001220 is an abundant number, since it is smaller than the sum of its proper divisors (231014182298044).

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

210002121001220 is a wasteful number, since it uses less digits than its factorization.

210002121001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282123739 (or 282123737 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210002121001220 its reverse (22100121200012), we get a palindrome (232102242201232).

The spelling of 210002121001220 in words is "two hundred ten trillion, two billion, one hundred twenty-one million, one thousand, two hundred twenty".