20101221001202 has 16 divisors (see below), whose sum is σ = 33113664864000. Its totient is φ = 9075597033840.

The previous prime is 20101221001189. The next prime is 20101221001207. The reversal of 20101221001202 is 20210012210102.

It is not an unprimeable number, because it can be changed into a prime (20101221001207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3066076802 + ... + 3066083357.

It is an arithmetic number, because the mean of its divisors is an integer number (2069604054000).

Almost surely, 2^{20101221001202} is an apocalyptic number.

20101221001202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20101221001202 is a deficient number, since it is larger than the sum of its proper divisors (13012443862798).

20101221001202 is a wasteful number, since it uses less digits than its factorization.

20101221001202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6132160321.

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

Adding to 20101221001202 its reverse (20210012210102), we get a palindrome (40311233211304).

The spelling of 20101221001202 in words is "twenty trillion, one hundred one billion, two hundred twenty-one million, one thousand, two hundred two".