221211123130 has 16 divisors (see below), whose sum is σ = 404928836640. Its totient is φ = 86984712592.

The previous prime is 221211123113. The next prime is 221211123139. The reversal of 221211123130 is 31321112122.

It is a junction number, because it is equal to n+sod(n) for n = 221211123098 and 221211123107.

It is not an unprimeable number, because it can be changed into a prime (221211123139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187466464 + ... + 187467643.

It is an arithmetic number, because the mean of its divisors is an integer number (25308052290).

Almost surely, 2^221211123130 is an apocalyptic number.

221211123130 is a deficient number, since it is larger than the sum of its proper divisors (183717713510).

221211123130 is a wasteful number, since it uses less digits than its factorization.

221211123130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374934173.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 221211123130 its reverse (31321112122), we get a palindrome (252532235252).

The spelling of 221211123130 in words is "two hundred twenty-one billion, two hundred eleven million, one hundred twenty-three thousand, one hundred thirty".