20010100021202 has 4 divisors (see below), whose sum is σ = 30015150031806. Its totient is φ = 10005050010600.

The previous prime is 20010100021201. The next prime is 20010100021211. The reversal of 20010100021202 is 20212000101002.

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., 18764239996441 + 1245860024761 = 4331771^2 + 1116181^2 .

It is not an unprimeable number, because it can be changed into a prime (20010100021201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5002525005299 + ... + 5002525005302.

Almost surely, 2^{20010100021202} is an apocalyptic number.

20010100021202 is a deficient number, since it is larger than the sum of its proper divisors (10005050010604).

20010100021202 is a wasteful number, since it uses less digits than its factorization.

20010100021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10005050010603.

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

Adding to 20010100021202 its reverse (20212000101002), we get a palindrome (40222100122204).

The spelling of 20010100021202 in words is "twenty trillion, ten billion, one hundred million, twenty-one thousand, two hundred two".