20101120202 has 4 divisors (see below), whose sum is σ = 30151680306. Its totient is φ = 10050560100.

The previous prime is 20101120201. The next prime is 20101120211. The reversal of 20101120202 is 20202110102.

It is a happy number.

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., 16843107961 + 3258012241 = 129781^2 + 57079^2 .

It is not an unprimeable number, because it can be changed into a prime (20101120201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025280049 + ... + 5025280052.

Almost surely, 2^20101120202 is an apocalyptic number.

20101120202 is a deficient number, since it is larger than the sum of its proper divisors (10050560104).

20101120202 is a wasteful number, since it uses less digits than its factorization.

20101120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050560103.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20101120202 its reverse (20202110102), we get a palindrome (40303230304).

The spelling of 20101120202 in words is "twenty billion, one hundred one million, one hundred twenty thousand, two hundred two".