1401212212112 has 10 divisors (see below), whose sum is σ = 2714848660998. Its totient is φ = 700606106048.

The previous prime is 1401212212111. The next prime is 1401212212157. The reversal of 1401212212112 is 2112122121041.

It can be written as a sum of positive squares in only one way, i.e., 855410413456 + 545801798656 = 924884^2 + 738784^2 .

It is not an unprimeable number, because it can be changed into a prime (1401212212111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43787881613 + ... + 43787881644.

Almost surely, 2^{1401212212112} is an apocalyptic number.

It is an amenable number.

1401212212112 is a deficient number, since it is larger than the sum of its proper divisors (1313636448886).

1401212212112 is an equidigital number, since it uses as much as digits as its factorization.

1401212212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87575763265 (or 87575763259 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 1401212212112 its reverse (2112122121041), we get a palindrome (3513334333153).

The spelling of 1401212212112 in words is "one trillion, four hundred one billion, two hundred twelve million, two hundred twelve thousand, one hundred twelve".