20200122212002 has 4 divisors (see below), whose sum is σ = 30300183318006. Its totient is φ = 10100061106000.

The previous prime is 20200122211963. The next prime is 20200122212009. The reversal of 20200122212002 is 20021222100202.

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., 16416750994081 + 3783371217921 = 4051759^2 + 1945089^2 .

It is not an unprimeable number, because it can be changed into a prime (20200122212009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050030552999 + ... + 5050030553002.

Almost surely, 2^{20200122212002} is an apocalyptic number.

20200122212002 is a deficient number, since it is larger than the sum of its proper divisors (10100061106004).

20200122212002 is a wasteful number, since it uses less digits than its factorization.

20200122212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10100061106003.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20200122212002 its reverse (20021222100202), we get a palindrome (40221344312204).

The spelling of 20200122212002 in words is "twenty trillion, two hundred billion, one hundred twenty-two million, two hundred twelve thousand, two".