1212022120001 has 16 divisors (see below), whose sum is σ = 1513378647168. Its totient is φ = 943003987200.

The previous prime is 1212022119989. The next prime is 1212022120009. The reversal of 1212022120001 is 1000212202121.

It is not a de Polignac number, because 1212022120001 - 2⁶ = 1212022119937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1212022120009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11855720 + ... + 11957513.

It is an arithmetic number, because the mean of its divisors is an integer number (94586165448).

Almost surely, 2^{1212022120001} is an apocalyptic number.

1212022120001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212022120001 is a deficient number, since it is larger than the sum of its proper divisors (301356527167).

1212022120001 is a wasteful number, since it uses less digits than its factorization.

1212022120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23813912.

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

Adding to 1212022120001 its reverse (1000212202121), we get a palindrome (2212234322122).

The spelling of 1212022120001 in words is "one trillion, two hundred twelve billion, twenty-two million, one hundred twenty thousand, one".