10402111123402 has 4 divisors (see below), whose sum is σ = 15603166685106. Its totient is φ = 5201055561700.

The previous prime is 10402111123357. The next prime is 10402111123457. The reversal of 10402111123402 is 20432111120401.

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., 10313032154881 + 89078968521 = 3211391^2 + 298461^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2600527780849 + ... + 2600527780852.

Almost surely, 2^{10402111123402} is an apocalyptic number.

10402111123402 is a deficient number, since it is larger than the sum of its proper divisors (5201055561704).

10402111123402 is an equidigital number, since it uses as much as digits as its factorization.

10402111123402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5201055561703.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 10402111123402 its reverse (20432111120401), we get a palindrome (30834222243803).

The spelling of 10402111123402 in words is "ten trillion, four hundred two billion, one hundred eleven million, one hundred twenty-three thousand, four hundred two".