11420405212155 has 16 divisors (see below), whose sum is σ = 18307720613664. Its totient is φ = 6079192021760.

The previous prime is 11420405212003. The next prime is 11420405212189. The reversal of 11420405212155 is 55121250402411.

It is not a de Polignac number, because 11420405212155 - 2¹² = 11420405208059 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730664304 + ... + 730679933.

It is an arithmetic number, because the mean of its divisors is an integer number (1144232538354).

Almost surely, 2^{11420405212155} is an apocalyptic number.

11420405212155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11420405212155 is a deficient number, since it is larger than the sum of its proper divisors (6887315401509).

11420405212155 is a wasteful number, since it uses less digits than its factorization.

11420405212155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461344766.

The product of its (nonzero) digits is 16000, while the sum is 33.

Adding to 11420405212155 its reverse (55121250402411), we get a palindrome (66541655614566).

The spelling of 11420405212155 in words is "eleven trillion, four hundred twenty billion, four hundred five million, two hundred twelve thousand, one hundred fifty-five".