200120001202121 has 64 divisors (see below), whose sum is σ = 268906582855680. Its totient is φ = 143827857411840.

The previous prime is 200120001202111. The next prime is 200120001202133. The reversal of 200120001202121 is 121202100021002.

It is not a de Polignac number, because 200120001202121 - 2⁶ = 200120001202057 is a prime.

It is a super-2 number, since 2×200120001202121² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200120001202096 and 200120001202105.

It is not an unprimeable number, because it can be changed into a prime (200120001202111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10577716700 + ... + 10577735618.

It is an arithmetic number, because the mean of its divisors is an integer number (4201665357120).

Almost surely, 2^{200120001202121} is an apocalyptic number.

It is an amenable number.

200120001202121 is a deficient number, since it is larger than the sum of its proper divisors (68786581653559).

200120001202121 is a wasteful number, since it uses less digits than its factorization.

200120001202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26806.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200120001202121 its reverse (121202100021002), we get a palindrome (321322101223123).

The spelling of 200120001202121 in words is "two hundred trillion, one hundred twenty billion, one million, two hundred two thousand, one hundred twenty-one".