20121200402 has 8 divisors (see below), whose sum is σ = 30253834800. Its totient is φ = 10036588804.

The previous prime is 20121200371. The next prime is 20121200417. The reversal of 20121200402 is 20400212102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12004652 + ... + 12006327.

It is an arithmetic number, because the mean of its divisors is an integer number (3781729350).

Almost surely, 2^20121200402 is an apocalyptic number.

20121200402 is a deficient number, since it is larger than the sum of its proper divisors (10132634398).

20121200402 is a wasteful number, since it uses less digits than its factorization.

20121200402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24011400.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20121200402 its reverse (20400212102), we get a palindrome (40521412504).

The spelling of 20121200402 in words is "twenty billion, one hundred twenty-one million, two hundred thousand, four hundred two".