10000021220104 has 8 divisors (see below), whose sum is σ = 18750039787710. Its totient is φ = 5000010610048.

The previous prime is 10000021220081. The next prime is 10000021220117. The reversal of 10000021220104 is 40102212000001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9056500397604 + 943520822500 = 3009402^2 + 971350^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625001326249 + ... + 625001326264.

Almost surely, 2^{10000021220104} is an apocalyptic number.

It is an amenable number.

10000021220104 is a deficient number, since it is larger than the sum of its proper divisors (8750018567606).

10000021220104 is a wasteful number, since it uses less digits than its factorization.

10000021220104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250002652519 (or 1250002652515 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10000021220104 its reverse (40102212000001), we get a palindrome (50102233220105).

The spelling of 10000021220104 in words is "ten trillion, twenty-one million, two hundred twenty thousand, one hundred four".