221212132103130 has 32 divisors (see below), whose sum is σ = 606753276626304. Its totient is φ = 50562773052096.

The previous prime is 221212132103117. The next prime is 221212132103141. The reversal of 221212132103130 is 31301231212122.

It is a super-2 number, since 2×221212132103130² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221212132103130.

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, 526695552417 + ... + 526695552836.

It is an arithmetic number, because the mean of its divisors is an integer number (18961039894572).

Almost surely, 2^{221212132103130} is an apocalyptic number.

221212132103130 is an abundant number, since it is smaller than the sum of its proper divisors (385541144523174).

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

221212132103130 is a wasteful number, since it uses less digits than its factorization.

221212132103130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053391105270.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 221212132103130 its reverse (31301231212122), we get a palindrome (252513363315252).

The spelling of 221212132103130 in words is "two hundred twenty-one trillion, two hundred twelve billion, one hundred thirty-two million, one hundred three thousand, one hundred thirty".