400212101543115 has 32 divisors (see below), whose sum is σ = 640470204541440. Its totient is φ = 213402844176896.

The previous prime is 400212101543011. The next prime is 400212101543117. The reversal of 400212101543115 is 511345101212004.

It is a cyclic number.

It is not a de Polignac number, because 400212101543115 - 2⁸ = 400212101542859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400212101543117) 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, 1743326179 + ... + 1743555731.

It is an arithmetic number, because the mean of its divisors is an integer number (20014693891920).

Almost surely, 2^{400212101543115} is an apocalyptic number.

400212101543115 is a deficient number, since it is larger than the sum of its proper divisors (240258102998325).

400212101543115 is a wasteful number, since it uses less digits than its factorization.

400212101543115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252803.

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 400212101543115 its reverse (511345101212004), we get a palindrome (911557202755119).

The spelling of 400212101543115 in words is "four hundred trillion, two hundred twelve billion, one hundred one million, five hundred forty-three thousand, one hundred fifteen".