221212023110030 has 16 divisors (see below), whose sum is σ = 398272696248384. Its totient is φ = 88464574877280.

The previous prime is 221212023110011. The next prime is 221212023110051. The reversal of 221212023110030 is 30011320212122.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221212023109984 and 221212023110011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2529249926 + ... + 2529337385.

It is an arithmetic number, because the mean of its divisors is an integer number (24892043515524).

Almost surely, 2^{221212023110030} is an apocalyptic number.

221212023110030 is a deficient number, since it is larger than the sum of its proper divisors (177060673138354).

221212023110030 is a wasteful number, since it uses less digits than its factorization.

221212023110030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5058591691.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221212023110030 its reverse (30011320212122), we get a palindrome (251223343322152).

The spelling of 221212023110030 in words is "two hundred twenty-one trillion, two hundred twelve billion, twenty-three million, one hundred ten thousand, thirty".