210221101002 has 64 divisors (see below), whose sum is σ = 469464551424. Its totient is φ = 62204163840.

The previous prime is 210221100983. The next prime is 210221101021. The reversal of 210221101002 is 200101122012.

It is an interprime number because it is at equal distance from previous prime (210221100983) and next prime (210221101021).

It is a super-2 number, since 2×210221101002² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12612258 + ... + 12628914.

It is an arithmetic number, because the mean of its divisors is an integer number (7335383616).

Almost surely, 2^210221101002 is an apocalyptic number.

210221101002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 210221101002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234732275712).

210221101002 is an abundant number, since it is smaller than the sum of its proper divisors (259243450422).

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

210221101002 is a wasteful number, since it uses less digits than its factorization.

210221101002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21163.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210221101002 its reverse (200101122012), we get a palindrome (410322223014).

The spelling of 210221101002 in words is "two hundred ten billion, two hundred twenty-one million, one hundred one thousand, two".