1022121022201 has 4 divisors (see below), whose sum is σ = 1024861293412. Its totient is φ = 1019380750992.

The previous prime is 1022121022183. The next prime is 1022121022207. The reversal of 1022121022201 is 1022201212201.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 555734466576 + 466386555625 = 745476^2 + 682925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022121022201 - 2¹¹ = 1022121020153 is a prime.

It is a super-3 number, since 3×1022121022201³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022121022207) 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, 1370135046 + ... + 1370135791.

It is an arithmetic number, because the mean of its divisors is an integer number (256215323353).

Almost surely, 2^{1022121022201} is an apocalyptic number.

It is an amenable number.

1022121022201 is a deficient number, since it is larger than the sum of its proper divisors (2740271211).

1022121022201 is an equidigital number, since it uses as much as digits as its factorization.

1022121022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740271210.

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

Adding to 1022121022201 its reverse (1022201212201), we get a palindrome (2044322234402).

The spelling of 1022121022201 in words is "one trillion, twenty-two billion, one hundred twenty-one million, twenty-two thousand, two hundred one".