200220121012121 has 16 divisors (see below), whose sum is σ = 229029468353280. Its totient is φ = 171462417952320.

The previous prime is 200220121012117. The next prime is 200220121012127. The reversal of 200220121012121 is 121210121022002.

It is a cyclic number.

It is not a de Polignac number, because 200220121012121 - 2² = 200220121012117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200220121012121.

It is not an unprimeable number, because it can be changed into a prime (200220121012127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91649636 + ... + 93808826.

It is an arithmetic number, because the mean of its divisors is an integer number (14314341772080).

Almost surely, 2^{200220121012121} is an apocalyptic number.

It is an amenable number.

200220121012121 is a deficient number, since it is larger than the sum of its proper divisors (28809347341159).

200220121012121 is a wasteful number, since it uses less digits than its factorization.

200220121012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171144.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 200220121012121 its reverse (121210121022002), we get a palindrome (321430242034123).

The spelling of 200220121012121 in words is "two hundred trillion, two hundred twenty billion, one hundred twenty-one million, twelve thousand, one hundred twenty-one".