20210001222 has 64 divisors (see below), whose sum is σ = 41840354304. Its totient is φ = 6504326400.

The previous prime is 20210001221. The next prime is 20210001223. The reversal of 20210001222 is 22210001202.

It is an interprime number because it is at equal distance from previous prime (20210001221) and next prime (20210001223).

It is a junction number, because it is equal to n+sod(n) for n = 20210001198 and 20210001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210001221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8913733 + ... + 8915999.

It is an arithmetic number, because the mean of its divisors is an integer number (653755536).

Almost surely, 2^20210001222 is an apocalyptic number.

20210001222 is an abundant number, since it is smaller than the sum of its proper divisors (21630353082).

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

20210001222 is a wasteful number, since it uses less digits than its factorization.

20210001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20210001222 its reverse (22210001202), we get a palindrome (42420002424).

The spelling of 20210001222 in words is "twenty billion, two hundred ten million, one thousand, two hundred twenty-two".