1220210002121 has 8 divisors (see below), whose sum is σ = 1401198088800. Its totient is φ = 1050898566240.

The previous prime is 1220210002117. The next prime is 1220210002129. The reversal of 1220210002121 is 1212000120221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220210002121 - 2² = 1220210002117 is a prime.

It is a super-2 number, since 2×1220210002121² (a number of 25 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 = 1220210002096 and 1220210002105.

It is not an unprimeable number, because it can be changed into a prime (1220210002129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2919162476 + ... + 2919162893.

It is an arithmetic number, because the mean of its divisors is an integer number (175149761100).

Almost surely, 2^{1220210002121} is an apocalyptic number.

1220210002121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220210002121 is a deficient number, since it is larger than the sum of its proper divisors (180988086679).

1220210002121 is a wasteful number, since it uses less digits than its factorization.

1220210002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5838325399.

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

Adding to 1220210002121 its reverse (1212000120221), we get a palindrome (2432210122342).

The spelling of 1220210002121 in words is "one trillion, two hundred twenty billion, two hundred ten million, two thousand, one hundred twenty-one".