1211102223001 has 6 divisors (see below), whose sum is σ = 1331211534506. Its totient is φ = 1101002020800.

The previous prime is 1211102222999. The next prime is 1211102223013. The reversal of 1211102223001 is 1003222011121.

It can be written as a sum of positive squares in only one way, i.e., 1208669366025 + 2432856976 = 1099395^2 + 49324^2 .

It is not a de Polignac number, because 1211102223001 - 2¹ = 1211102222999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211102223091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5004554520 + ... + 5004554761.

Almost surely, 2^{1211102223001} is an apocalyptic number.

1211102223001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1211102223001 is a deficient number, since it is larger than the sum of its proper divisors (120109311505).

1211102223001 is a wasteful number, since it uses less digits than its factorization.

1211102223001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10009109303 (or 10009109292 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1211102223001 its reverse (1003222011121), we get a palindrome (2214324234122).

The spelling of 1211102223001 in words is "one trillion, two hundred eleven billion, one hundred two million, two hundred twenty-three thousand, one".