221012121130 has 16 divisors (see below), whose sum is σ = 397828285920. Its totient is φ = 88403411152.

The previous prime is 221012121103. The next prime is 221012121131. The reversal of 221012121130 is 31121210122.

It is not an unprimeable number, because it can be changed into a prime (221012121131) 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, 647517 + ... + 928063.

It is an arithmetic number, because the mean of its divisors is an integer number (24864267870).

Almost surely, 2^221012121130 is an apocalyptic number.

221012121130 is a deficient number, since it is larger than the sum of its proper divisors (176816164790).

221012121130 is a wasteful number, since it uses less digits than its factorization.

221012121130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359333.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 221012121130 its reverse (31121210122), we get a palindrome (252133331252).

The spelling of 221012121130 in words is "two hundred twenty-one billion, twelve million, one hundred twenty-one thousand, one hundred thirty".