220400401402 has 4 divisors (see below), whose sum is σ = 330600602106. Its totient is φ = 110200200700.

The previous prime is 220400401399. The next prime is 220400401423. The reversal of 220400401402 is 204104004022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 149947847361 + 70452554041 = 387231^2 + 265429^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220400401402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55100100349 + ... + 55100100352.

Almost surely, 2^220400401402 is an apocalyptic number.

220400401402 is a deficient number, since it is larger than the sum of its proper divisors (110200200704).

220400401402 is a wasteful number, since it uses less digits than its factorization.

220400401402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110200200703.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 220400401402 its reverse (204104004022), we get a palindrome (424504405424).

The spelling of 220400401402 in words is "two hundred twenty billion, four hundred million, four hundred one thousand, four hundred two".