221212202210102 has 8 divisors (see below), whose sum is σ = 334754748477576. Its totient is φ = 109627286050912.

The previous prime is 221212202210063. The next prime is 221212202210137. The reversal of 221212202210102 is 201012202212122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489407526788 + ... + 489407527239.

It is an arithmetic number, because the mean of its divisors is an integer number (41844343559697).

Almost surely, 2^{221212202210102} is an apocalyptic number.

221212202210102 is a deficient number, since it is larger than the sum of its proper divisors (113542546267474).

221212202210102 is a wasteful number, since it uses less digits than its factorization.

221212202210102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978815054142.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221212202210102 its reverse (201012202212122), we get a palindrome (422224404422224).

The spelling of 221212202210102 in words is "two hundred twenty-one trillion, two hundred twelve billion, two hundred two million, two hundred ten thousand, one hundred two".