420110111211555 has 32 divisors (see below), whose sum is σ = 672367251306240. Its totient is φ = 223995043852160.

The previous prime is 420110111211473. The next prime is 420110111211563. The reversal of 420110111211555 is 555112111011024.

It is not a de Polignac number, because 420110111211555 - 2¹⁸ = 420110110949411 is a prime.

It is a super-2 number, since 2×420110111211555² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 766682104 + ... + 767229866.

It is an arithmetic number, because the mean of its divisors is an integer number (21011476603320).

Almost surely, 2^{420110111211555} is an apocalyptic number.

420110111211555 is a deficient number, since it is larger than the sum of its proper divisors (252257140094685).

420110111211555 is a wasteful number, since it uses less digits than its factorization.

420110111211555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562211.

The product of its (nonzero) digits is 2000, while the sum is 30.

Adding to 420110111211555 its reverse (555112111011024), we get a palindrome (975222222222579).

The spelling of 420110111211555 in words is "four hundred twenty trillion, one hundred ten billion, one hundred eleven million, two hundred eleven thousand, five hundred fifty-five".