20111420102 has 16 divisors (see below), whose sum is σ = 30554410560. Its totient is φ = 9926661888.

The previous prime is 20111420099. The next prime is 20111420111. The reversal of 20111420102 is 20102411102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1725398 + ... + 1737014.

It is an arithmetic number, because the mean of its divisors is an integer number (1909650660).

Almost surely, 2^20111420102 is an apocalyptic number.

20111420102 is a deficient number, since it is larger than the sum of its proper divisors (10442990458).

20111420102 is a wasteful number, since it uses less digits than its factorization.

20111420102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22655.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20111420102 its reverse (20102411102), we get a palindrome (40213831204).

The spelling of 20111420102 in words is "twenty billion, one hundred eleven million, four hundred twenty thousand, one hundred two".