221000212010 has 32 divisors (see below), whose sum is σ = 415138832640. Its totient is φ = 84547888128.

The previous prime is 221000211967. The next prime is 221000212039. The reversal of 221000212010 is 10212000122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221000211982 and 221000212000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2463626 + ... + 2551754.

It is an arithmetic number, because the mean of its divisors is an integer number (12973088520).

Almost surely, 2^221000212010 is an apocalyptic number.

221000212010 is a deficient number, since it is larger than the sum of its proper divisors (194138620630).

221000212010 is a wasteful number, since it uses less digits than its factorization.

221000212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99062.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221000212010 its reverse (10212000122), we get a palindrome (231212212132).

The spelling of 221000212010 in words is "two hundred twenty-one billion, two hundred twelve thousand, ten".