101220004 has 6 divisors (see below), whose sum is σ = 177135014. Its totient is φ = 50610000.

The previous prime is 101220001. The next prime is 101220013. The reversal of 101220004 is 400022101.

It can be written as a sum of positive squares in only one way, i.e., 53582400 + 47637604 = 7320^2 + 6902^2 .

It is not an unprimeable number, because it can be changed into a prime (101220001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12652497 + ... + 12652504.

Almost surely, 2^101220004 is an apocalyptic number.

It is an amenable number.

101220004 is a deficient number, since it is larger than the sum of its proper divisors (75915010).

101220004 is a wasteful number, since it uses less digits than its factorization.

101220004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25305005 (or 25305003 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 101220004 is about 10060.8152751156. The cubic root of 101220004 is about 466.0388444106.

Adding to 101220004 its reverse (400022101), we get a palindrome (501242105).

The spelling of 101220004 in words is "one hundred one million, two hundred twenty thousand, four".