22001222209977 has 32 divisors (see below), whose sum is σ = 34310335488000. Its totient is φ = 13895331656400.

The previous prime is 22001222209943. The next prime is 22001222210029. The reversal of 22001222209977 is 77990222210022.

It is not a de Polignac number, because 22001222209977 - 2¹⁶ = 22001222144441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22001222209277) 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, 48484024 + ... + 48935702.

It is an arithmetic number, because the mean of its divisors is an integer number (1072197984000).

Almost surely, 2^{22001222209977} is an apocalyptic number.

22001222209977 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

22001222209977 is a deficient number, since it is larger than the sum of its proper divisors (12309113278023).

22001222209977 is a wasteful number, since it uses less digits than its factorization.

22001222209977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546658 (or 546652 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

Adding to 22001222209977 its sum of digits (45), we get a palindrome (22001222210022).

Adding to 22001222209977 its reverse (77990222210022), we get a palindrome (99991444419999).

The spelling of 22001222209977 in words is "twenty-two trillion, one billion, two hundred twenty-two million, two hundred nine thousand, nine hundred seventy-seven".