1220154001 has 8 divisors (see below), whose sum is σ = 1335416544. Its totient is φ = 1105614720.

The previous prime is 1220153959. The next prime is 1220154053. The reversal of 1220154001 is 1004510221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220154001 - 2¹³ = 1220145809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220154101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177280 + ... + 184033.

It is an arithmetic number, because the mean of its divisors is an integer number (166927068).

Almost surely, 2^1220154001 is an apocalyptic number.

1220154001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220154001 is a deficient number, since it is larger than the sum of its proper divisors (115262543).

1220154001 is a wasteful number, since it uses less digits than its factorization.

1220154001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361631.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1220154001 is about 34930.7028414832. The cubic root of 1220154001 is about 1068.5746885433.

Adding to 1220154001 its reverse (1004510221), we get a palindrome (2224664222).

The spelling of 1220154001 in words is "one billion, two hundred twenty million, one hundred fifty-four thousand, one".