101102154421 has 2 divisors, whose sum is σ = 101102154422. Its totient is φ = 101102154420.

The previous prime is 101102154359. The next prime is 101102154427. The reversal of 101102154421 is 124451201101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95876310321 + 5225844100 = 309639^2 + 72290^2 .

It is a cyclic number.

It is not a de Polignac number, because 101102154421 - 2⁹ = 101102153909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101102154392 and 101102154401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101102154427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50551077210 + 50551077211.

It is an arithmetic number, because the mean of its divisors is an integer number (50551077211).

Almost surely, 2^101102154421 is an apocalyptic number.

It is an amenable number.

101102154421 is a deficient number, since it is larger than the sum of its proper divisors (1).

101102154421 is an equidigital number, since it uses as much as digits as its factorization.

101102154421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 22.

Adding to 101102154421 its reverse (124451201101), we get a palindrome (225553355522).

The spelling of 101102154421 in words is "one hundred one billion, one hundred two million, one hundred fifty-four thousand, four hundred twenty-one".