1212002222001 has 128 divisors (see below), whose sum is σ = 1880891228160. Its totient is φ = 689975193600.

The previous prime is 1212002221981. The next prime is 1212002222021. The reversal of 1212002222001 is 1002222002121.

It is an interprime number because it is at equal distance from previous prime (1212002221981) and next prime (1212002222021).

It is not a de Polignac number, because 1212002222001 - 2³¹ = 1209854738353 is a prime.

It is a super-2 number, since 2×1212002222001² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212002222021) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 218100915 + ... + 218106471.

It is an arithmetic number, because the mean of its divisors is an integer number (14694462720).

Almost surely, 2^{1212002222001} is an apocalyptic number.

It is an amenable number.

1212002222001 is a deficient number, since it is larger than the sum of its proper divisors (668889006159).

1212002222001 is a wasteful number, since it uses less digits than its factorization.

1212002222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5775.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1212002222001 its reverse (1002222002121), we get a palindrome (2214224224122).

The spelling of 1212002222001 in words is "one trillion, two hundred twelve billion, two million, two hundred twenty-two thousand, one".