201022220100121 has 16 divisors (see below), whose sum is σ = 233359205474304. Its totient is φ = 169610150341584.

The previous prime is 201022220100101. The next prime is 201022220100223. The reversal of 201022220100121 is 121001022220102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201022220100121 - 2¹³ = 201022220091929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201022220100095 and 201022220100104.

It is not an unprimeable number, because it can be changed into a prime (201022220100101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834640945 + ... + 834881758.

It is an arithmetic number, because the mean of its divisors is an integer number (14584950342144).

Almost surely, 2^{201022220100121} is an apocalyptic number.

It is an amenable number.

201022220100121 is a deficient number, since it is larger than the sum of its proper divisors (32336985374183).

201022220100121 is a wasteful number, since it uses less digits than its factorization.

201022220100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669522980.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201022220100121 its reverse (121001022220102), we get a palindrome (322023242320223).

The spelling of 201022220100121 in words is "two hundred one trillion, twenty-two billion, two hundred twenty million, one hundred thousand, one hundred twenty-one".