20211220110202 has 8 divisors (see below), whose sum is σ = 33072905634912. Its totient is φ = 9186918231900.

The previous prime is 20211220110167. The next prime is 20211220110233. The reversal of 20211220110202 is 20201102211202.

It is a happy number.

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, 459345911574 + ... + 459345911617.

It is an arithmetic number, because the mean of its divisors is an integer number (4134113204364).

Almost surely, 2^{20211220110202} is an apocalyptic number.

20211220110202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20211220110202 is a deficient number, since it is larger than the sum of its proper divisors (12861685524710).

20211220110202 is a wasteful number, since it uses less digits than its factorization.

20211220110202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918691823204.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20211220110202 its reverse (20201102211202), we get a palindrome (40412322321404).

The spelling of 20211220110202 in words is "twenty trillion, two hundred eleven billion, two hundred twenty million, one hundred ten thousand, two hundred two".