1212212201001 has 32 divisors (see below), whose sum is σ = 1638904440960. Its totient is φ = 796882944000.

The previous prime is 1212212200999. The next prime is 1212212201009. The reversal of 1212212201001 is 1001022122121.

It is not a de Polignac number, because 1212212201001 - 2¹ = 1212212200999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212212201009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222707586 + ... + 222713028.

It is an arithmetic number, because the mean of its divisors is an integer number (51215763780).

Almost surely, 2^{1212212201001} is an apocalyptic number.

It is an amenable number.

1212212201001 is a deficient number, since it is larger than the sum of its proper divisors (426692239959).

1212212201001 is a wasteful number, since it uses less digits than its factorization.

1212212201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7657.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212212201001 its reverse (1001022122121), we get a palindrome (2213234323122).

The spelling of 1212212201001 in words is "one trillion, two hundred twelve billion, two hundred twelve million, two hundred one thousand, one".