20012202020121 has 8 divisors (see below), whose sum is σ = 27250658070144. Its totient is φ = 13057606991760.

The previous prime is 20012202020119. The next prime is 20012202020131. The reversal of 20012202020121 is 12102020221002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20012202020121 - 2¹ = 20012202020119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20012202020121.

It is not an unprimeable number, because it can be changed into a prime (20012202020131) 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, 70965255250 + ... + 70965255531.

It is an arithmetic number, because the mean of its divisors is an integer number (3406332258768).

Almost surely, 2^{20012202020121} is an apocalyptic number.

It is an amenable number.

20012202020121 is a deficient number, since it is larger than the sum of its proper divisors (7238456050023).

20012202020121 is a wasteful number, since it uses less digits than its factorization.

20012202020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141930510831.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20012202020121 its reverse (12102020221002), we get a palindrome (32114222241123).

The spelling of 20012202020121 in words is "twenty trillion, twelve billion, two hundred two million, twenty thousand, one hundred twenty-one".