21155236246150 has 24 divisors (see below), whose sum is σ = 39352575905640. Its totient is φ = 8461269447360.

The previous prime is 21155236246097. The next prime is 21155236246223. The reversal of 21155236246150 is 5164263255112.

It is a junction number, because it is equal to n+sod(n) for n = 21155236246097 and 21155236246106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20108199 + ... + 21134098.

It is an arithmetic number, because the mean of its divisors is an integer number (1639690662735).

Almost surely, 2^{21155236246150} is an apocalyptic number.

21155236246150 is a deficient number, since it is larger than the sum of its proper divisors (18197339659490).

21155236246150 is a wasteful number, since it uses less digits than its factorization.

21155236246150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41252568 (or 41252563 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 21155236246150 in words is "twenty-one trillion, one hundred fifty-five billion, two hundred thirty-six million, two hundred forty-six thousand, one hundred fifty".