200121220212019 has 4 divisors (see below), whose sum is σ = 201348957759496. Its totient is φ = 198893482664544.

The previous prime is 200121220212013. The next prime is 200121220212029. The reversal of 200121220212019 is 910212022121002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 200121220212019 - 2¹¹ = 200121220209971 is a prime.

It is a super-2 number, since 2×200121220212019² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200121220211984 and 200121220212002.

It is not an unprimeable number, because it can be changed into a prime (200121220212013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613868773494 + ... + 613868773819.

It is an arithmetic number, because the mean of its divisors is an integer number (50337239439874).

Almost surely, 2^{200121220212019} is an apocalyptic number.

200121220212019 is a deficient number, since it is larger than the sum of its proper divisors (1227737547477).

200121220212019 is a wasteful number, since it uses less digits than its factorization.

200121220212019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227737547476.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 200121220212019 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, nineteen".