221201010212 has 96 divisors (see below), whose sum is σ = 481624872960. Its totient is φ = 86556211200.

The previous prime is 221201010211. The next prime is 221201010241. The reversal of 221201010212 is 212010102122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (221201010211) 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, 47680589 + ... + 47685227.

It is an arithmetic number, because the mean of its divisors is an integer number (5016925760).

Almost surely, 2^221201010212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221201010212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240812436480).

221201010212 is an abundant number, since it is smaller than the sum of its proper divisors (260423862748).

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

221201010212 is a wasteful number, since it uses less digits than its factorization.

221201010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6061 (or 6059 counting only the distinct ones).

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

Adding to 221201010212 its reverse (212010102122), we get a palindrome (433211112334).

It can be divided in two parts, 2212010 and 10212, that added together give a palindrome (2222222).

The spelling of 221201010212 in words is "two hundred twenty-one billion, two hundred one million, ten thousand, two hundred twelve".