210071662220 has 144 divisors (see below), whose sum is σ = 515895700320. Its totient is φ = 71643995136.

The previous prime is 210071662169. The next prime is 210071662249. The reversal of 210071662220 is 22266170012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245124032 + ... + 245124888.

It is an arithmetic number, because the mean of its divisors is an integer number (3582609030).

Almost surely, 2^210071662220 is an apocalyptic number.

210071662220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210071662220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257947850160).

210071662220 is an abundant number, since it is smaller than the sum of its proper divisors (305824038100).

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

210071662220 is a wasteful number, since it uses less digits than its factorization.

210071662220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912 (or 1903 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 210071662220 in words is "two hundred ten billion, seventy-one million, six hundred sixty-two thousand, two hundred twenty".