221130420134511 has 32 divisors (see below), whose sum is σ = 302801378181120. Its totient is φ = 143493046351200.

The previous prime is 221130420134509. The next prime is 221130420134531. The reversal of 221130420134511 is 115431024031122.

It is not a de Polignac number, because 221130420134511 - 2¹ = 221130420134509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221130420134531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219982716 + ... + 220985646.

It is an arithmetic number, because the mean of its divisors is an integer number (9462543068160).

Almost surely, 2^{221130420134511} is an apocalyptic number.

221130420134511 is a deficient number, since it is larger than the sum of its proper divisors (81670958046609).

221130420134511 is a wasteful number, since it uses less digits than its factorization.

221130420134511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016187.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 221130420134511 its reverse (115431024031122), we get a palindrome (336561444165633).

The spelling of 221130420134511 in words is "two hundred twenty-one trillion, one hundred thirty billion, four hundred twenty million, one hundred thirty-four thousand, five hundred eleven".